14 ACNIDA 



Acnida L. Amarantaceae (2). 3 U.S. Dioecious. 

 Acnlstus Schott. Solanaceae (2)'. 20 trop. Am. 

 Acoelorrhaphe H. Wendl. Palmaceae (i. 2). Nomen. 

 Acokanthera G. Don. Apocynaceae (i. i). 3 Abyss., S. Afr., A. 



venenata G. Don, root and wood supplies Zulu arrow-poison ' 

 Acom (W.I.), Dioscorea bulbifera L. 

 Acomastylis Greene (Potentilla et Geum p.p.). Rosac. (in. 2). s N. 



Am. 



Acomis F. Muell. Compositae (4). 3 Austr. 



Acomosperma K. Schum. Asclepiadaceae(nomen). i Amazon valley. 

 Aconceveibum Miq. Euphorbiaceae (B. n). i Java. 

 Aconite, Aconitin, Aconitum ; winter-, Eranthis hyemalis Salisb. 

 Aconitum Tourn. ex L. Ranunculaceae (2). 80 N. temp. A. 

 Napcllns L. (aconite, monkshood, wolf's bane) in Brit. Fls. in 

 racemes (see order). The post, sepal forms a large hood, enclosing 

 the two 'petals' which are repres. by nectaries on long stalks. Fl. 

 protandrous, adapted, by its structure and its blue colour, to bees. 

 The distribution of A. largely coincides with that of the humble-bee 

 (Bombus). Humble-bees often rob the flr. of its honey by biting 

 through the hood. Fr. of follicles which open so far as to expose the 

 seeds, which only escape when shaken by wind or otherwise (censer- 

 mechanism}. All are poisonous; the tuberous roots contain alkaloids 

 of the aconitin group (used in medicine). A. ferox Wall (root) 

 furnishes the Bikh poison of Nepal. 

 Acontias Schott = Xanthosoma Schott, p.p. (Arac.). 

 Acophorum Gaudich. Gramineae. Nomen nudum. 

 Acorellus Palla ex Kneuck (Cyperus L. p.p.). Cyper. (i). 3 S. Eur., 



Medit. 

 Acoridium Nees et Meyen (Ceratoslylis Blume, Dendrochilum Blume). 



Orchidaceae (n. 3). 45 Indomal. 

 Acorn, Qtiercus. 



Acorus L. Araceae (i). 2 N. temp., S.E. As. A. Calamus L. (sweet 

 flag) Brit. Rhiz. sympodial; 1. isobil. Fl. $ , protog., with P. Used 

 in flavouring. 



Acotyledones (Jussieu) = Cryptogamae. 

 Acourtia D. Don=Perezia Lag. (Compositae). 

 Acquired characters, non-hereditary, arising during life. 

 Acradenia Kipp. Rutaceae (i). i Tasm. 

 Acrandra Berg. (Campomanesia Ruiz et Pav. BH.}. Myrtaceae (i. i). 



2 S. trop. Braz. 



Acranthera Arn. Rubiaceae (i. 7). 9 Indomal. 

 Acranthous, cf. Orchidaceae. 

 Acridocarpus Guill. et Perr. Malpighiaceae (i). 20 Afr., Madag., 



Arabia. 



Acriopsis Reinw. Orchidaceae (n. 1 6). 10 E. Indomal. 

 Acrista O. F. Cook. Palmae (iv. i). i Porto Rico. 

 Acritochaete Pilger. Gramineae (5). i Kilimanjaro. 

 Acriulus Ridl. Cyperaceae (n). 2 Madag., Angola. 

 Aero- (Gr. pref.), apical; -carpous, with terminal fruit; -gamae = 

 Porogamae; see Chalazogamae ; -gens, ferns and mosses; -nychius 

 (Lat.), curved like a claw; -petal, produced successively towards 



