782 Borraginaceae. 
pubescent beneath; petiole 6-—10 mm long. Cymes terminal; branches 
and outside of the calyx more or less hairy; pedicels 2—5 mm long. 
Calyx oblong-campanulate, 5 mm long, membranous and obscurely 
lobed at the apex. Corolla white; tube cylindric, a little longer 
than the calyx; lobes oblong, obtuse, 2'/, by 1 mm. Stamens 
inserted in the corolla-throat, glabrous. Style-arms narrowly clavate. 
Fruit ovoid, apiculate by the persistent style-base, seated upon the 
accrescent saucer-shaped calyx, reddish. — Flow. January to March. 
O. Great Oasis: Kharge (Schweinfurth and Ascherson). 
Local name: mukheyt; gimbil. 
Also extends from Tropical Africa through Arabia into India. 
442. (2.) Heliotropium Linn. 
Calyx deeply divided into 5 segments. Corolla with a cylindrical 
tube; lobes 5, spreading, plicate and imbricate in the bud. Stamens 
inserted in the tube; anthers often mucronate or acuminate and 
sometimes cohering by their tips, included or the tips slightly pro- 
truding. Ovary entire, 4-celled, with 1 laterally attached or pendulous 
ovule in each cell; style terminal, short or long, the stigma or 
stigmatic summit broadly umbrella-shaped or with a fleshy ring 
surrounding the base of a more or less distinct central cone or 
point. Fruit more or less 2 or 4-lobed or furrowed, separating 
into 4 l1-seeded nuts, or in species not Hgyptian into 2 hard 
2-seeded carpels. Seeds with a scanty or rarely with a rather thick 
albumen. — Herbs undershrubs or rarely shrubs, with appressed 
and strigose or with rigid and spreading hairs, very rarely glabrous. 
Flowers usually small, sessile or pedicellate in one-sided simple or 
once or twice-forked spikes, with or without bracts, which when 
present are often not immediately under the pedicels. 
The genus is widely dispersed over the tropical and subtropical regions 
of the globe, a few species extending beyond the tropics both in the northern 
and the southern hemispheres. 
A. Corolla-lobes distinctly caudate. . .... . . 1. H. zeylanicum. 
B. Corolla-lobes not caudate. 
I. Annuals. 
a) Calyx deciduous .. «jee macs uelih % 2, H. supinum. 
b) Calyx persistent. 
1. Stigma tapering from a conical base. 
a) Leaves obtuse at the base... . 3. H. pallens. 
6) Leaves tapering to the base. 
