Botanic Scientific Terms

PY

pycn- - pycno- G. close, dense, compact. Pycnanthus with flowers crowded together, pycnostachyus, with dense spike. - 14, 493

pycnos - G. Thick or dense. See species pycnothrix. - 1, 14; 16, 24e

pycnostachys - DSN. G. Pyknos, dense and stachys, a spike but in botany an ear of corn. For this genus a dense flower spike. - 1, 230; 3, 131; 5, pl 144; 16,348b, 352e

pycnothrix - DSN. From pycnos, thick or dense and thix, hair. In species Chloris p. an allusion to the numerous conspicuous awns. - 1, 14; 16, 24e

pycreus DSN. Anagram of Cyperus. See genus Pycreus – 18,562

pygmaeum - DSN. L. Pygmy, refers to dwarf habit. See Brachystelma p. subsp. P., Pachystigma p. - 1,214,258; 16, 320d, 406e; 18,554

pygmaios – DSN. Dwarf. Pygmaeothamnus.- 18,556

pyknos - G. Dense. See Pycnostachys. - 1, 230; 3, 131; 16, 348b; 18,472

pyle- - G. In compounds, -opening. - 14, 493

pyllon - G. A leaf. - 1, 114

pyr - G. n. Fire. See genus Pyracantha, Pyrenacantha. - 1, 162; 12, 301; 14, 278; 16, 238a

pyr- - G. pyro-. In compounds, fire-, fiery hence red or yellow. - 14, 493

pyra - Fire. See genus Pyracantha. - 13, 1220

pyracantha - DSN. From pyr or pyra, fire and akanthos, a thorn. Also given from Greek purakantha, a word of doubtful derivation. Fire-thorn. In Putterlickia p. it refers to the colour of the new thorns or pain from a thorn spike. - 2, 270; 10, 273; 12, 301; 13, 1220

pyradidalis - DSN. Pyramidal. - 10, 340

pyramis - G. Pyramid. - 14, 278

pyren - G. m. Fruit-stone. - 14, 278

pyrenacantha - DSN. G. From pyr, fire and akanthos, a thorn. - 1, 162; 16, 238a

pyro- - G. pyr-. In compounds, fire-, fiery hence red or yellow.. - 14, 493

pyroides - DGN. L. Like Pyrus, the pear tree. See Rhus p. , Rhus p. var p. - 1, 160; 16, 234d

pyros - G. m. Wheat. See species agropyroides, Diospyros. - 1, 14, 194; 14, 278; 16, 24g

pyrus - DGN. L. For the genus Pyrus from pirus the latin for a pear. See pyroides. - 1, 160; 4, 122; 10,274


Q

QA

quadr- - L. quadri-. In compounds, four- - 14, 493

quadrangularis - DSN. L. With four angles. In Cissus q. it refers to the four-angled stem. 1,166;16,246b;

18,538

quadri- - L. quadr-. In compounds, four- - 14, 493

quadridens - DSN. Four teeth, refers to the 4 toothed corona lobes. See Schizoglossum q. – 18,168

quadrifidia - DSN. L. Cut into four. See Portulaca q. - 16, 134n-o

quanzensis - GSN. L.From the Cuanza (Quanza) river in Angola. See Afzelia q. - 16,174c

quartiniana - CSN. Named after Richard Quartin-Dillon, botanist See Dioscorea q. – 18,108

QE

quercus - MGN. Latin. Ancient Latin name for the Oak. - 4, 123; 10, 274; 12,301

QI

quinatum - DSN. L. In fives. In Jasminum q. it refers to the five leaflets. - 1, 194; 16, 296c

quinqu- - L. quinque, quinqui-. In compounds, five-. - 14, 494

quinque- - L. quinqui-, quinq . In compounds, five-. - 14, 494

quinquenervia – DSN. From quinquenervius, five veins. For Tieghemia q. five veins from base of leaf.

- 18,50

quinquenervius – DSN. Five veins. See Tieghemia q. - 18,50

quinqui- - L. quinque-. Quinqu. In compounds, five-. - 14, 494

quinquefolius - DSN. With five leaves or leaflets. - 10, 340

quisqualis - DSN. From Quis, who and what. ‘who-what’, refers to the Malay Dutch name for Q. parviflora of ‘hoedanig’ for the Rangoon species. - 2, 362; 16, 274f

R

RA

rabdos – DGN. Taken from another closely related genus Rabdosia. See genus Rabdosiella.-

18,424

rabdosia – DSN. G. From rhabdos, a rod, meanig rod-like. See also Rabdosiella. - 1, 228; 16,346d

rabdosiella - DGN. Taken from the name of another genus in the same family, Rabdosia, which it closely

resembles. 16, 346d, 358b

racemosa - DSN. L. Simple, elongate cluster. With flowers arranged in a raceme (inflorescence in which

the youngest flowers are at the top). See Ceropegia r., Ceropegia r subsp setifera, Eutaxia r.,Gnidia

r. - 1,212; 10, 155, 340; 16, 318g; 18,174,294

racemosum - DSN. L. With flowers in a raceme, (see racemosa). See Cycnium r. - 1, 234; 3, 142;

16,364g, 370c; 18,432

racemosus - DSN. Flowering in racemes, resembling a bunch of grapes. See Asparagus r. - 12,304;

13,1223; 18,104

rach- - G. rhach-. In compounds, pertaining to the main axis, spine or backbone. - 14, 494

radiata - DSN. L. Radiating. In Hesperantha r. it alludes to the florets. - 1, 72, 76; 16, 90f

radicans – DSN. Striking root. See Nesaea r. – 18,410

radicata - DSN. L. With tap root. See Hypochaeris r. - 18, 338

radlkoferi - CSN. Ludwig Radlkofer. See Greyia r.- 1, 162; 16, 238d

radula - DSN. L. A file, rasp. See Berkheya r.- 1, 266; 16, 424e

radulosa - DSN. L Rasp, file, rough. See Brunsvigia r. - 16, 68a; 18,348

rafnia – CSN. Named after Danish botanist C.G. Rafn. See genus Rafnia.- 18,258,576

raineriana - CSN. Rainer. See Leonotus ocymifolia. var r. - 16, 348e

rami- - L. In compounds, pertaining to branches, branched-. - 14, 496

ramosior - DSN. L. Branching. See Plectranthus madagascariensis var. r. - 1, 228; 16, 346e

ramosissimus - DSN. Much branched. See Asparagus r. – 18,104

ramulosus – DSN. Many small branches. See Syncolostemon r. – 18,426

rana - L. Frog. See Ranunculus. -1, 112 ,18,250

rananthera - DSN. From the Latin renes kidney and the Greek anthera anther, in allusion to the kidney-shaped pollina of the type species. - 28, 382

randii - CSN. Dr Richard Frank Rand. Holothrix r., Barleria r. - 1, 88; 5, pl 50, 167; 16, 110c

rangaeris - MGN. Rangaeris is allied to Aerangis and the name is meant to be an anagram of the latter. See genus Rangaeris. – 18,130; 28, 382

ranunculus - DSN. L. A diminutive form of rana a frog, because the plant inhabits moist places. - 1, 112; 12,300; 16, 140b

rapanea - MGN. A common name used for a species in Guinea. - 16, 290c

raphiolepis - DSN. From rhapis, needle and lepis, a scale, an allusion to the awl-shaped bracts. - 10, 276

raphionacme - DSN. G. From rhapis, needle and akme, point., possibly referring to the slender inner corona lobes. - 1, 206, 218; 16, 310a,b, 312h-j, 324d,e, 326e

raphis – DSN. A needle. See Raphiolepis, Raphionacme.- 1, 206; 10, 276; 16, 310a

rauvolfia - CSN. Leonheart Rauwolf. - 11, 156

rawsonia - CSN. R W Rawson. - 16, 264g
RE

re- - L. Back, against, again. Resupinatus, bent back. Greek ana-.- 14, 303

recta - DSN. L. Upright. See Crotalaria r. - 1, 140; 16, 182g

recti- - L. In compounds, straight, upright. - 14, 497

reflexa - DSN. L. Bent sharply backwards. See Vepris r., Salvia r.- 16, 208c, 352d

refracta – DSN. Broken. See Polygala r. – 18,404

regalis – DSN. Royal. In Galtonia r. the reference is to the Royal Natal National Parks, where the type specimen was collected. - 18,96

regelia - CSN. Dr E Regel. - 10, 277

regia - DSN. Royal. See Erica r., Poiciana r.- 10, 141, 258, 340

reginae – DSN. Queen. For Strelitzia r. - 18,46

rehmanniana - CSN. Anton Rehmann. See Boscia foetida subsp r. - 16, 148d

rehmannii - CSN. Anton Rehmann. See Zantedeschia r. Also see Gladiolus ecklonii r.,

Salacia r., Vitex r., Aeollanthus r., Coccinia r., Aeschynomene r. subsp leptobotrya, Barleria r., Plectranthus r., Polygala r. - 1, 18, 74, 160, 224, 232, 262; 16,30b,94c,190d,234f.338d,350a,b,394j, 412c; 18,186,308,340,404

reinwardtia - CSN. K G K Reinwardt.. - 10, 277

reitzii - CSN. F W Reitz. Aloe r. - 1, 48

relhania – CSN. Named after Rev. R. Relhan. See genus Relhania.- 18,316

rendalii - CSN. Named after Dr.P.Rendall. See Ceropegia r - - 1, 212;16, 318d; 18,174

renes – DSN. L. Kidney. See Rananthera - 28, 382

renibractea – DSN. Kidney-shaped bracts. See Disperis r. – 18,370,520

repanda - DSN.L. With slightly wavy margins. See Adenia r. - 1, 180; 16, 270b

repandum – DSN. L.(1). With wavy margins. See Desmondium r., Sium r. - 1, 132; 3, 96; 16,168c,288a; 18,60,296

repens - DSN. L. Creeping. See Rhynchelytrum r., Caprosma r., Duranta r., Melinus r., Barleria r., Falckia r., Salvia r. - 1,12; 10, 101, 133, 340; 16, 22d; 18,76,176,472

reptans - DSN. L. Creeping and rooting. See Dicilis r., Satureja r. - 1, 234; 16, 364a; 18,190,424,428

reseda - DSN. From resedo, to calm or sooth, because it was once used for bruises. - 12, 302; 13,1221

resedo – DSN. To calm or sooth. See genus Reseda. - 13, 1221

restis – DSN. A rope or cord. Restio – 18,570

restrepia - CSN. Sr Jose E Restrepo. - 28, 383

restricta - DSN. L. Restricted. Eulophia r. - 1, 156; 16, 226d

reticulata - DSN. L. Reticulate, net-veined, a network of veins. See Pycnostachys r. For Citrus r. fibrous strands of pith under a loose skin. For Behnia r. it refers to the net-like pattern on the leaves. - 1, 230; 3, 131; 15, 70; 16 58h, 348b; 18,230,472

reticulatus - DSN. Netted or veined or with a network of veins. See Phyllanthus r. - 10, 340; 12,304; 13,1223; 16, 222b

retinens – DSN. L. Not letting go. See Acacia leuderitzii var. r. - 1, 142

retinervis - DSN. L. Reticulately nerved, net-veined. See Xerophyta r. - 1, 68; 16, 78b; 18,352

retro- - Back, behind. Retrocurvus, curved back. - 14, 303

retroflexum - DSN. Turned back, refers to petals. See Solanum r. – 18,188

retusa - DSN. L. Blunt. With rounded, slightly notched tip. See Peperomia r.,Dioscorea r. - 1, 98; 18,108,524

revoluta - DSN. Rolled back. Refers to the revolute ( rolled back from the edge) leaf margins for Erica r., Parvetta r., Ledebouria r. - 16, 290b; 25, 897; 18,452

revolutum - DSN. Refers to the revolute ( rolled back from the edge) leaf margins for Hypericum r. - 1,178; 5,pl.107; 16, 266d

reynoldsii - CSN. Named after Gilbert Reynolds. See Aloe r. – 18,228
RH

rhabdos - G. f. A rod, wand. See Rabdosia. - 1, 228; 14, 278

rhabdotos - G. Striped. - 14, 278

rhach- - G. rach-. In compounds, pertaining to the main axis, spine or backbone. - 14, 494

rhachis - G. f. Backbone, midrib of leaf, axis of the leaf above the petiole. See leiorhachis. - 1, 142; 14,278

rhacodytos - G. Rhacois. Ragged, torn, tattered. - 14, 278

rhacois - G. Rhacodytos. Ragged, torn, tattered. - 14, 278

rhaibos - G. Crooked, bent. - 14, 278

rhamnus - DSN. G. The Greek name for this prickly shrub or for several prickly shrubs. - 1, 164; 10, 277; 11, 112; 16, 240e

rhamphicarpa - DSN. G. From rhampos, a hooked beak and karpos, fruit. Beaked fruit. - 1, 236; 5,pl 150

rhamphos - G. A hooked beak. See Rhamphicarpa. - 1, 236

rhaphis - G. Needle. See Raphionacme. - 1, 206; 18,542

rhapontica – DGN. Like garden rhubarb. See Berkheya r. – 18,336

rheo- - G. In compounds, pertaining to flowing water. - 14, 499

rhigos - G. Cold, and hence rigid. See Rhigozum. - 1, 240; 16, 376e

rhigozum - MGN. From rhigos, cold, hence rigid, alluding to the rigid branches characteristic of this genus. Obscure, may mean stark and rigid, alluding to the bareness of the shrub before it comes into flower. - 1,240; 5, pl 158; 16, 376e,f

rhin - DSN. A snout. See Antirrhinum. - 12, 300; 13, 1220

rhine – DSN. File or rasp. See genus Rhinacanthus.- 18,438

rhinos – DSN. Nose. Pentarrhinum.- 18,550

rhip – DSN. Wickerwork. Rhipsalis – 18,540

rhipidos - G. f. Fan. Rhipis. - 14, 278

rhipis - G. f. Fan. Rhipidos. - 14, 278

rhips – DSN. Wickerwork. See genus Rhipsalis.- 18,158

rhiza - G. f. Root, elephant root. See rhizophora, pachyrrhiza; Elephantorrhiza. - 2, 348; 14, 278; 16,32h; 18,150

rhiza- - G. rhizi-. In compounds pertaining to the roots or root-like organs. - 14, 499

rhizi- - G. rhiza-. In compounds pertaining to the roots or root-like organs. - 14, 499

rhizophora - DSN. G. 'Rhiza,' root and 'phoro,' to bear. In R. mucronata it refers to the rooting system. - 2, 348

rhodantha – DSN. Bearing red flowers. See Disa r. – 18,368

rhodanthus - DSN. Red flowered. See Hibiscus r. - 5, pl 103

rhodesiana - GSN. From Rhodesia, now Zimbabwe. For Tinnea r. where this plant was first collected. - 16, 358g

rhodesica - GSN. From Rhodesia, now Zimbabwe. - 16, 134j

rhodo - G. Rose, red. See genus Rhodohypoxis. - 1, 66; 16, 78e-f; 18,352

rhodo- - G. As a prefix in compounds, rose-, rosy. In compounds, rose-, rosy-red. See Rhodohypoxis. - 14,278,499; 16, 78e-f

rhododendron - MGN. From the Greek rhodon, rose and dendron, a tree comes the genus name. - Rhododendron. - 10, 278

rhodohypoxis - DGN. G. From rhodo, red and hypoxis, the genus to which it is related. - 1, 66; 16,78e-f

rhodon – DSN. G. A rose. See genus Rhododendron. - 10, 278; 13, 1219; 12, 300; 14, 278

rhoias - G. A pomegranate. See Rhoicissus. - 16, 244b

rhoicissus - DGN. G. From rhoias, a pomegranate and kissos, ivy, alluding to the appearance and taste of the fruit. - 16, 244b

rhombifolius - DSN. With rhomb-shaped leaves. [rhomb - rhombus]. - 10, 340

rhomboideus - DSN. L. Diamond-shaped. See Senecio r. - 1, 272; 16, 430a; 18,328

rhopalo- - G. In compounds club-, cudgel-. See clavatus, coryne-. - 14, 500

rhus - MGN. G. Red. Original Greek name for European member of this genus. Or referring to the leaves turning red in autumn. - 1, 160; 4, 126; 10, 285; 16, 232b-f, 234b-d; 18,534

rhyac- - G. In compounds pertaining to rushing streams, torrent. - 14, 500

rhynch- - G. rhyncho-. In compounds provided with a snout or beak, i.e. a projecting appendage. - 14, 500

rhynchelytrum - DSN. From rhynchos, a beak and elytron, a cover, scale or husk. See - 1, 12

rhyncholaenus – DSN. Snoutlike. See Senecio r. – 18,328

rhynchos – DSN. G. A beak., snout, bill -[-rhiimum]. See Rhynchosia, Rhynchelytrum, Diplorhynchus, Pentarrhinum, Ancistrorhynchus, Chondrorhyncha, Stenorrhynchus Rhynchostylis, Rhynchospora.- 1, 12, 124, 206; 3, 98; 11, 152; 16, 180h, 308e; 18,270,568; 28, 49, 87,384, 403

rhynchosia - DSN. G. From rhynchos, a beak. Some species of this genus Rhynchosia have a beaked pod. - 1, 124, 130; 3, 98; 16, 170d; 16, 178e-g, 180h,j, 186a, 192e, 198d, 202f

rhynchostylis - DSN. G. From rhynchos beak and stylis column, in reference to beaked column of the flowers of the type species. - 28, 384
RI

ribes - MGN. An ancient Arabian name, belonging properly to the Rheum. - 10, 286

ricasoliana – CSN. Named after V.Ricasoli. See Podranea r. – 18,434

ricinocarpa - DGN. G. From Ricinus, karpos, a fruit. In Sparrmmania r. seed like caster-oil plant. - 16,252c; 18,156

ricinus - Genus in Euphorbiaceae family, caster-oil plant. See ricinocarpa. - 16, 252c

rigens – DSN. Stiff. See Gazania r. – 18,334

rigescens - DSN. L. Stiff. In Solanum r. it refers to the spines. - 16, 362a

rigida - DSN. L. Rigid, stiff. See Ehretia r. In Rhus r. it alludes to the habit. - 1, 224; 16, 232f, 338b

rigidifolia - DSN. L. With rigid leaves. See Kniphophia r. - 16, 44e

rigidiuscula - DSN. L. Rigid. See Heliophila r. - 16, 142f-g; 18,460

rigidula - DSN. L. Somewhat rigid. See Hypoxis r. - 1, 66; 16, 78c; 18,234

rigidus – DSN. Stiff. See Rubus r. – 10,340; 18,386

riocreuxia - CSN. Named after French botanical artist Alfred Riocreux. See genus Riocreuxia - 1, 214, 3,122; 16, 310d, 320I; 18,176

riparia - DSN. L. Growing on banks of rivers and streams. See Iboza r., Tetradenia r. - 1, 232; 16,350c; 18,472

rivina - CSN. August Rivinus. - 18,52

rivularis - DSN. Of the rivers.See Wahlenbergia r., Gomphocarpus r. - 12, 303; 13, 1222; 16,418c; 18,168
RO

robertsiana - CSN. A certain Roberts about whom little is known. See Turbina r. - 1, 222; 16, 334i

robinia - CSN. Jean Robin.- 10, 286; 12, 300; 13, 1219

robiquetia - CSN. Pierre Robiquet. - 28, 385

robusta - DSN. L. Robust, stout. See Cleome oxyphylla var. r. - 16, 144d

robustum - DSN. L. Robust, large. See Schizoglossum r., Argyrolobium r. Big, strong. See Geranium r. - 1, 210; 18,266,466

robustus - DSN. Strong. - 10, 340

rodriguezia - CSN. Don Manuel Rodriguez. - 28, 385

rodrigueziella - CSN. Dr João Barbosa Rodrigues 1877-1882. - 28, 387

roella – CSN. Named after W. Roell, prof. of anatomy in Amsterdam 1737.- 18,492

roeperanum - CSN. J A C Roeper. See Hypericum r. - 5, pl 106

rogersii - CSN. Archdeacon Frederick Arundel Rogers. See Anisotes r., Sterculia r.,

Dyschoriste r. - 1, 248; 16,260a, 386d, 394a

romneya - CSN. Rev. T Romney-Robinso. - 10, 287; 13, 1219

rondletia - CSN. Guillaume Rondelet. - 10, 288

rooperi - CSN. Capt, Edward Rooper. See Kniphofia r. - 18,30

rosa - MGN. Name from ancient Latin. - 10, 288

rosea - MGN. Rose-coloured. In Oenothera r. reference is to flowers. Canavalia r. - 16, 280c; 18,396,410

roseus - DSN. Pink. - 12, 304; 13, 1223

rosifolius - DGN. Leaves like a rose. See Rubus r. – 18,148

rosmarinifolia - DGN. Leaves that are similar to rosemary. See Athixia r. - 5, pl 179

rosmarinoides - DGN. Remembling rosemary. See Maerua r. - 16, 146c

rosmarinus - DGN. Sea dew, from the ancient Latin name for Rosemary. - 10, 289; 13, 1220

rossi – CSN. Dr James Ross. Eriosema r. - 18,60

rossioglossum - CSN. John Ross 1830-1840. - 28,387

rostratus - DSN. Beaked or with slender point. In Pterocelastrus r. it refers to the fruit. - 2, 274

rothmannia - CSN. Georgius Rothmann. - 1, 256; 3, 222; 16, 400e