HIPPOCREPIS 
411 
Heterotropa Morr. et Dcne. = Asarum Linn. 
Heuchera Linn. Saxifragaceae (1). 24 sp. N. Am. Firs, sometimes 
apetalous. 
Hevea Aubl. Euphorbiaceae (A. 11. 3). 10 sp. trop. Am. H brasili- 
ensis Mull.-Arg., now largely cult, in Ceylon &c., is the source of the 
best caoutchouc (Para rubber) ; incisions are made in the bark, and 
the latex is collected and coagulated. [C/. p. 199, and literature p. 197.] 
Hexaptera Hook. Cruciferae (I. 2). 6 sp.temp. S. Am. Fruit winged. 
Hibbertia Andr. (incl. Candollea Labill. 1806). Dilleniaceae. 100 sp. 
Austr., New Caled. &c. Mostly shrubs of ericoid or climbing habit. 
Some sp. have phylloclades. InflL dichasial, but often, by reduction, 
coming to look like a raceme. The sta. &c. vary much in number in 
different sp. (see Nat . PJl .). 
Hibiscus Linn. (incl. Abelmoschus Medic.). Malvaceae (iv). 150 sp. 
trop. and sub-trop. The 5 ante-sepalous sta. are represented by teeth 
at the top of the stamen-tube. Several sp. are cultivated, especially 
H. Rosa-sinensis L. (firs, showy), H. Sabdariffa L. (Rozelle, fruit for 
jelly &c.), H. {A.) esculentus L. (Okra or Bandakai, mucilaginous 
young fruit in soups, &c.). 
Hieracium (Tourn.) Linn. Compositae (xm). 400 sp. N. Hemisph., 
S. Afr., Andes. There are several sp. in Brit, (hawk-weeds), which, 
especially in Scotland, vary very much ; innumerable varieties have 
been raised by various botanists to specify rank (see p. 119 and 
London Cat. of Brit. Plants , 9th ed.). 
Hierochloe S. G. Gmel. Gramineae (vn). 13 sp. temp, and frigid. 
(1 Brit., rare.) 
Higginsia Pers. = Hoffmannia Sw. 
Hildebrandtia Vatke. Convolvulaceae (1. 3). 2 sp. Afr. 
Himantoglossum Spreng. = Orchis Tourn. 
Hinterhubera Sch. Bip. Compositae (ill). 3 sp. Andes. 
Hippeastrum Herb. Amaryllidaceae (1). 50 sp. trop. and sub-trop. Am. 
Hippia Linn. Compositae (vil). 4 sp. S. Afr. 
Hippocastanaceae. Dicotyledons (Archichl. Sapindales). Only genus 
Aesculus (q.v.). United to Sapindaceae by Benth. -Hooker. 
Hippocratea Linn. Hippocrateaceae. 70 sp. trop. Twining shrubs. 
Hippocrateaceae. Dicotyledons (Archichl. Sapindales). 3 gen. with 
150 sp. trop. and sub-trop. Shrubs, mostly lianes, with opp. or alt. 
simple leaves. Firs, in cymes, £ , regular, with disc. K 5> C 5, A 3 
(rarely 5, 4, 2), G (3), with 2 — 10 anatropous ovules in each loc. 
Berry or schizocarp. No endosperm. Genera: Campylostemon, 
Hippocratea, Salacia. [United to Celastraceae by Benth. -Hooker; 
placed in Frangulinae by Warming.] 
Hippocrepis Linn. Leguminosae (ill. 7). 12 sp. Medit. H. comosa 
L. extends to Scotland. The mechanism of the fir. is like that of 
Lotus, but on the claw of the standard is a triangular flap closing the 
entrance to the honey. Bees must lift the standard to reach the honey 
and so cannot avoid making the mechanism work properly. 
