APPENDIX II. 



the flowers are of two kinds differing in sex in the same head 

 or spikelet, e.g., male and female, male and hermaphrodite, etc 



Hilum, the scar on a seed indicating the point of separa- 

 tion from the ftmicle or stalk. 



Hirsnte, with a thick covering of somewhat firm moder- 

 ately loDg hairs. Cp. hairy, pubescent, villous, etc. 



Hispid, with short scattered very stiff hairs or bristles, 

 sometimes the base of the hair only is stiff. A hispid surface 

 feels harsh to the hand. 



Hoary, grey or white. 



Homogamous, a term usually restricted to the flower- 

 heads of the Compositae and the spikelets of grasses where 

 the flowers are all similar to one another in sex in the same 

 head or spikelet. 



Homoichlamydeoas, where the different whorls or mem- 

 bers of the perianth or floral envelopes are all similar in 

 texture, i e., not distinctly differentiated into calyx and 

 corolla. Cp. Haplochlamydeous, Heieroehlamydeous. 



Homologous, of similar morphological significance. 



Hygrophyte, a plant requiring a constant 6upply of mois- 

 ture all the year round. 



Hypanthium, a more or less tubular or flask-shaped zone 

 of the floral axis which grows up above the level of the 

 ovary and bears on its margin or at different levels the floral 

 envelopes and androecium. It is sometimes constricted above 

 the ovary and prolonged into a s beak ' above it It is either 

 green or coloured, specially in fruit. The ovary may lie 

 free within it or be closely invested by (adnate to) it, ia 

 which case it may be referred to as the ovary-wall, See also 

 Calyx-tube. 



HypogynouS, situated on the torus at the same level as, or 

 below the level of, the base of the ovary- Cp. perigynous, 

 epigynous. 



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