Medicinal and aromatic plants – industrial profiles

Key to species
1
Bracts ovate to obovate, 
 
abruptly tapering to a point with reticulate
veining, leaves regularly pinnatifid (lobed to only half the distance to
midrib) with simple segments  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
L. somaliensis
26
Tim Upson

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Bracts ovate or narrowly triangular, forming a long spinescent tip, parallel veined;
leaves present with pinnatifid leaves with toothed segments or leaves absent  . . . . . . . . . 2
2
Indumentum of flower spike and lower stem with long soft simple hairs  . . . . . 
L. nimmoi
Indumentum of flower spike with fine short hairs, short woolly hairs or dense long
woolly branched hairs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3
3
All stems 6–8 angled, bracts narrowed above to a fine bristle like tip  . . . . . . . .  
L. setifera
All stems four-angled, bracts with stiff spinescent tip  . . . . . . . . . . . . . .  . . . . . . . . . . . . 4
4
Bracts 6.5–12 mm long, greatly exceeding calyx, calyx purple when in
flower  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L. aristibracteata
Bracts 2–7 mm long, calyx green to grey-green or if purplish then bract not exceeding
subtending bract in length  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
5
Plants 
 
leafless or with one or two leaves on lower part of stem  . . . . . . . . . . . . . . . . . . 6
Plants leafy  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
6
Spike lax in fruit, plant branched from nodes and often tufted at upper nodes.
Sessile glands numerous in nerves between calyx  . . . . . . . . . . . . . . . . . . . . .. . . .  
L. macra
Spike condensed in fruit, plant branched mainly from the base. Few sessile
glands between nerves on calyx  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
L. subnuda
7
Bracts longer than calyx, calyx teeth 
 
reflexed in fruit; bracts and 
calyx with sparse indumentum of long woolly hairs  . . . . . . . . . . . . . . . . . .
L. galgalloensis
Bracts shorter than calyx rarely longer, calyx teeth erect in fruit; bracts and calyx with
indumentum of fine short hairs or short woolly hairs  . . . . . . . . . . . . . . . . . . . . . . . . . .   8
8
Stems and leaves densely hairy, upper leaves pinnatifid  . . . . . . . . . . . . . . . .
L. dhofarensis
Stem and leaves glabrescent or sparsely hairy, uppermost leaves typically
entire with one or two teeth only  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L. subnuda
20.