FLORA OF ADEN. 
253 
a short beak, channelled on one side, very turgid on the other, smooth, 
crowned with a tuft of hairs. 
Locality : — “ Neighbourhood of Aden, common near water 33 
(Hunter) . 
We are not sure whether this plant has been found on British 
territory. 
Distribution: — Arabia, Eritrea, Galabat, Abyssinia, Somaliland, 
German East Africa. 
XXXI-BORAGINACEdE. 
Herbs, shrubs, or trees, with usually alternate leaves. 
Inflorescence normally a dichotomous cyme with helicoid branches, 
sometimes a simple unilateral raceme or spike or an irregularly trichoto- 
mous panicle. Flowers hermaphrodite, usually regular, hypogvnous, and 
pentamerous. Calyx-tube campanulate or cylindric ; lobes 4—5 (rarely 
6 — 8). Corolla various, usually 4 — 5-lobed ; lobes mostly imbricate. Sta- 
mens as many as the corolla-lobes, epipetalous ; filaments filiform or 
dilated at the base, sometimes with a basal scale ; anthers various, dorsi- 
fixed, more or less bilobed at the base, introrsely or laterally dehiscent. 
Disk annular, entire or 5-lobed, sometimes inconspicuous. Ovary- 
superior, confluent at the base with the disk, entire or more or less com- 
pletely 2— 4-lobed, 2-celled and 2-ovulate or 4-celled and 1 -ovulate; 
ovules erect or attached to the inner angle of the cell ; style terminal 
in the entire, gynobasic in the lobed ovary ; stigma terminal or annular, 
entire or bilobed. 
Fruit drupaceous or dividing into 2 — 4 nutlets. Seeds erect, oblique or 
almost horizontal, straight or curved ; testa membranous ; albumen 
copious, scanty or 0 ; embryo straight or curved ; cotyledons flat, plano- 
convex or thick and fleshy, usually entire; radicle usually much shorter 
than the cotyledons. 
(xenera about 85. Species about 1,200. 
Distribution /—Tropical and temperate regions, specially Mediter- 
ranean. 
Btyle terminal on the ovary I. Heliotropium- 
Style i nserted between the 4 lobes of the ovary : 
Flowers regular . . . . .2, Arnebia. 
Flowers irregular . . . . .3. Echiochilon. 
1. Heliotropium Liim, 
Herbs, undershrubs or shrubs with usually alternate leaves. 
Flowers often unilateral along the branches of terminal scorpioid 
symes, sometimes all axillary or arranged in simple leafy racemes 
