ACOKANTHERA 
221 
Aceras R.Br. Orchidaceae (3). 1 sp. Eur. (incl. Brit.), A. anthro - 
pophora R.Br., the man-orchis. Like Orchis. 
Acetosa Tourn. ex Mill. = Rumex Linn. 
Acetosella Moehr. = Oxalis Linn. 
Acharia Thunb. Passifloraceae (cf. Achariaceae). 1 sp. S. Afr. 
Achariaceae. A sub-order of Passifloraceae^ differing chiefly in the 
slight development of the receptacle, and in possessing sympetalous 
flrs. ; sometimes raised to ordinal rank. 
Achillea Linn. Compositae (vit). 80 sp. N. temp. A. Millefolium 
L. (yarrow or milfoil) common in Brit., A. Ptarmica L. (sneezewort) 
frequent. The flrs. have very short tubes and are visited by less 
highly specialised insects than most of the order. 
Achimenes P.Br. Gesneraceae (11). 25 sp. trop. Am. 
Achlamydosporeae (Benth. -Hooker). The sixth series of Monochlamy- 
deae (p. 136). 
Achlys DC. Berberidaceae. 2 sp. Japan and Pacif. N. Am. The 
flrs. have no perianth; it aborts early in development. 
Achras Linn. Sapotaceae (1). 1 sp., A. Sapota L., W. Ind., trop. 
Am., cultivated, for its edible fruit, the Sapodilla plum. The 
resinous latex, when coagulated, forms chicle gum, used in the U.S. 
for making statuettes, and for other purposes. 
Achyrachaena Schau. Compositae (v). 1 sp. N.W.U.S. Pappus of 
broad, silvery scales ; fruit-heads used as “ everlastings.” 
Achyranthes Linn. Amarantaceae (2). 15 sp. trop. and sub-trop. 
Achyrocline Less. Compositae (iv). 25 sp. Madag., trop. Afr. and Am. 
Achyrophorus Adans. = Hypochaeris Linn. 
Achyrospermum Blume. Labiatae (vi, 4). 7 sp. trop. Afr. to Malay Is. 
Aciachne Benth. Gramineae (vm). 1 sp. trop. S. Am. 
Acianthus R.Br. Orchidaceae (4). 7 sp. Austr., N.Z., New Caled. 
Eight pollinia. 
Acicarpha Juss. Calyceraceae. 3 sp. temp. S. Am. 
Acidanthera Hochst. Iridaceae (in). 16 sp. trop. and S. Afr. 
Acineta Lindl. Orchidaceae (19). 10 sp. Cent. Am., Mexico, epiphytic. 
There is an outgrowth of the axis carrying out the labellum and 
2 sepals. The labellum is attached to the column. 
Acinodendron Kuntze = Miconia Ruiz et Pav. 
Aciotis D. Don. Melastomaceae (1). 30 sp. trop. Am., W. Ind. 
Aciphylla Forst. Umbelliferae (6). 13 sp. Austr., N.Z. 
Acisanthera P.Br. Melastomaceae (1). 20 sp. trop. Am., W. Ind. 
Acleisanthes A. Gray. Nyctaginaceae (1). 5 sp. Mex., Texas. 
Acmadenia Bartl. et Wendl. f. Rutaceae (iv). 14 sp. S. Afr. 
Acmeila Rich. = Spilanthes Jacq. 
Acnida Linn. Amarantaceae (2). 3 sp. U.S. Dioecious. 
Acnistus Schott. Solanaceae (11). 14 sp. trop. Am. 
Acokanthera G. Don. Apocynaceae (1. 1). 3 sp. Abyss., S. Afr. 
The root and wood of A. venenata G. Don supply the Zulus with 
their arrow- poison. 
