HELIGME 319 



Helnsia DC. Rubiaceae (r. 8). 5 trop. Afr. 



Heisteria Jacq. Olacaceae. 25 warm Am., W. Afr. 



Hekistocarpa Hook. f. Rubiaceae (i. 2). i Nigeria. 



Heladena A. Juss. Malpighiaceae (n). 5 Brazil, Argentina. 



Helcia Lindl. (Trichopilia BH.}. Orchidaceae (n. 19). i Panama. 



Heldreichia Boiss. Cruciferae (2). 6 W. As. 



Helenia L. = Helenium L. 



Helenium L. Compositae (6). 30 W. Am. 



Heleocharis (Eleocharis} R. Br. Cyperaceae (i). 90 cosmop. 



Heleochloa Host. Gramineae (8). 8 N. palaeotemp. 



Heleog-iton Schult. = Scirpus L. (Cyper.). 



Heleophylax Beauv. =Scirpus L. p.p. (Cyper.). 



Helia Mart. (Lisianthits BH. ). Gentianaceae (i). 7 trop. S. Am. 



Heliamphora Benth. Sarraceniaceae. i Guiana, a pitcher plant 

 (cf. Sarracenia). 



Helianthella Torr. et Gray. Compositae (5). 15 W. U.S., Mexico. 



Helianthemum Tourn. ex Hall. Cistaceae. 125 Eur., Medit., N. Am. 

 H. vulgare Gaertn. and 3 others in Brit, (rock-rose). Infl. a cin- 

 cinnus. The fl. contains no honey and is homogamous, with sensitive 

 sta., which move outwards when touched. 



Helianthostylis Baill. Moraceae (n). i Amazon valley. 



Heliantnum Engelm. ex Britton (Echinodorus EP.\. Alism. ? 

 N. Am. 



Helianthus L. Compositae (5). 60 Am. Good for chars, of 5. 

 In H. annuus L. (sunflower) the number of fls. upon the head is 

 often enormous and they show very regular spiral arrangement, 

 probably due (largely) to pressure in the bud. Ray florets neuter. 

 The seeds give oil. H. tuberosus L. (Jerusalem artichoke) has sub- 

 terranean tuberous stems, like potatoes, with well marked ' eyes ' 

 (buds in axils of scale-1 ). 



Helichrysum Vaill. ex L. Compositae (4). 350 Eur., As., Afr., 

 Austr. ; 150 in S. Afr. Many xero. with hairy surface, decurrent, 

 &c. The dried fl. -heads of some sp. are ' everlastings.' 



Helicia Lour. Proteaceae (n). 30 Indomal. &c. 



Helicilla Moq. Chenopodiaceae (B). i China. 



Helicodiceros Schott. Araceae (vn). i Corsica, Sardinia, H. cri- 

 nitus Schott (H. muscivorus Engl. ). The development of the pedate 

 leaf is cymose ; the later formed branches grow more slowly than the 

 earlier. The name nniscivorus is due to the number of flies captured ; 

 attracted by the foul smell of the infl. (cf. Arum) they collect inside 

 the spathe in enormous numbers ; it may often be seen tightly packed ; 

 when it withers the top closes and they are caught. 



Heliconia L. Musaceae. 35 trop. Am. Fls. in cincinni ; odd sep. 

 post. 



Helicophyllum Schott (Eminium EP.}. Araceae (vn). 3 W. As. 



Helicostylis Tree. Moraceae (n). 2 Guiana, N. Brazil. 



Helicteres Pluk. ex L. Sterculiaceae. 45 trop. (exc. Afr.). The fls. 

 become zygomorphic if they happen to be in a horiz. position. 



Helictonema Pierre. Celastraceae. i trop. Afr. 



Helietta Tul. Rutaceae (iv). 4 trop. Am. 



Heligme Blume = Parsonsia R. Br. (Apocyn.). 



