334 



HUTHIA 



Huthia Brand. Polemoniaceae. i Peru. 



Huttonaea Harv. Orchidaceae (n. i). 3 S. Afr. 



Huttonella T. Kirk (Carmichaelia p.p.). Legumin. (in. 6). 4 N.Z. 



Huxleya Ewart. Verbenaceae (4). i N. Austr. 



Hyacinth, Hyacinthus; grape-, Mnscari; wild-, Scilla nittans Sm. 



Hyacinthus (Tourn.) L. Liliaceae (v). 30 Medit., Afr. Many forms 



of hyacinth (derived from //. orientalis L.) are cult. orn. fi. 

 Hyalea Jaub. et Spach = Centaurea L. p.p. (Comp.). 

 Hyaline, transparent. 

 Hyalis D. Don ex Hook, et Am. (Plazia p.p. EP.). Comp. (12). 



4 S. Am. 



Hyalocalyx Rolfe. Turneraceae. 2 Madag. 

 Hyalocystis Hallier f. Convolvulaceae (i). i trop. Afr. 

 Hyaloseris Griseb. Compositae (12). 2 Mts. of Argentina. 

 Hybanthus Jacq. (lonidium Bff.). Violaceae. 75 trop. and subtrop. 

 Hybophrynium K. Schum. Marantaceae. i Cameroons. 

 Hybosperma Urb. Rliamnaceae. i W.I. 

 Hybrid, a cross between two species; graft-, Cytisits. 

 Hydatella Diels. Centrolepidaceae. 2 W. Austr. 

 Hydathodes, pores through which the pi. excretes water. 

 Hydnocarpus Gaertn. Flacourtiaceae (3). 25 Indomal. 

 Hydnophytum Jack. Rubiaceae (n. 5). 30 E. As., New Guinea, Fiji, 



&c. Epiphytes with ant-inhabited tubers, like Myrmecodia (q.v.}- 

 Hydnora Thunb. Hydnoraceae. 7 Afr. 

 Hydnoraceae (EP. ; Cytinaceae p.p. BH.). Dicots. (Archichl. Aristo- 



lochiales). 2 gen. with 7 sp., Afr., S. Am. Parasitesjike Rafflesiaceae. 



Fls 5 , reg. P (34) fleshy, A 34 epiphyllous, G (3) with parietal 



plac. and <xov. Berry. Enddsp. andperisperm. Chief genm: Hydnora. 

 Hydrangea Gronov. ex L. Saxifragaceae (m). 25^. Shrubs with 



opp. L, some climbing. Fls. in cymose corymbs, the outer (or in 



cult, forms all) neuter with petaloid calyx, giving conspicuousness to 



the infl. (cf. Compositae, Umbelliferae). 

 Hydrangeaceae ( Warming) = Saxifragaceae ( ill). 

 Hydranthelium H. B. et K. Scrophulariaceae (n. 6). 2 trop. S. Am. 

 Hydrastis Ellis. Berberidaceae, sometimes in Ranunculaceae (i). 2, 



i in Japan, i in N. Am. (//. canadensis L. , golden-seal, a tonic). 

 Hydrastylis Steud. = Sisyrinchium L. p.p. (Irid.). 

 Hydriastele H. Wendl. et Drude. Palmaceae (iv. i). 2 Austr. 

 Hydrilla L. C. Rich. Hydrocharidaceae. i \%. 

 Hydro- (Gr. pref.), water-; -chore, pi. distributed by water; -philous, 



water pollinated, Zostera ; -phytes, cf. Water-plants ; -phytium (Cl.), 



a water-pi, formation; -tropism, irritability to presence of water. 

 Hydrobryum Endl. Podostemaceae. 5 India, Ceylon. 

 Hydrocaryaceae. A family sometimes made to include Trapa, usu. 



placed in Onagraceae. 



Hydrocera Blume. Balsaminaceae. i Indomal. 

 Hydrocharideae (Bfl.} = Hydrocharitaceae. 

 Hydrocharis L. Hydrocharitaceae. i Eur. (incl. Brit.), As., H. Morsus- 



ranae L., the frog-bit, a rootless water-pi, with orbicular floating 1. 



Fls. dioec., produced upon the surface. During summer the pi. 



multiplies by horizontal stolons, which form new pis. at the ends. 



