AZALEA 65 



Autumn crocus, Colchicum. 



Autunesia O. Hoffm. Compositae (i). i Angola. 



Auxemma Miers. Boraginaceae (i). 2 Brazil. Useful firewood. 



Auxopus Schlechter. Orchidaceae (II. 2). i Cameroons. 



Avellanita Phil. Euphorbiaceae (A. II. 3). i Chili. 



Avellinia Parl. Gramineae (10). 2 Medit. 



Avena L. Gramineae (9). 70 temp, and Mts. of trop.; 2 Brit. (oat-, 

 grass). A. sativa L., the cult, oat, is perhaps derived from A.fatna L. 

 It is cult, in Eur. to 69^ N. and forms the staple of the food of a large 

 population. It occurs in two chief forms, the common oat with open 

 spreading panicles, and the Tartarian oat with contracted one-sided 

 panicles. [See De Candolle's Orig. of Cult. Pits. p. 373.] The 

 2-6-flowered spikelets form a loose panicle. The paleae are awned, 

 the awn of the inf. palea being usually twisted and hygroscopic. In 

 A. steriiis L. the awns cross, and when wetted try to uncurl and thus 

 press on one another till a sort of explosion occurs jerking away the 

 fruits. 



Avenastrum Jessm. (Avena L. p.p.). Gramineae (9). 10 S. Afr. 



Avens, Geitm. 



Averrhoa L. Oxalidaceae. 4 trop. As. (? ; long cult. ; origin uncertain). 

 A. Bilitnbi L. (blimbing) and A. Carambola L. (carambola) cult, for 

 fr., which is borne on the older stems (cauliflory). 



Averrlioidium Baill. Sapindaceae (11). 2 Brazil, Paraguay. 



Averse, turned back. 



Avicennia L. Verbenaceae (7). 3 trop., a constituent of the mangrove 

 veg. (q.v.). The seeds germinate in the fr., and they have aerial r. 

 projecting out of the mud like Sonneratia. 



Avocado, I'ersea gratissima Gaertn. f. 



Awl-wort, Subularia aquatica L. 



Awn, a thread-like organ on a fr., Anthoxanthum, Erodium, Gerania- 

 ceae, Gramineae. 



Axanthes Blume=Urophyllum Wall. (Kubiac.). 



Axia Lour. (Boerhaavia L. p.p. EP.\. Nyctaginaceae (Valeriana- 

 ceae? BH.}. i Cochinchina. 



Axial, axile, belonging to the axis ; -placentation, on the axis, cf. 

 diagram of Guttiferae, Liliaceae, 



Axil, the upper angle between a 1. and the stem on which it is borne ; 

 -lary, in the axil. Cf. Buds, Concrescence, &c. 



Axinaea Ruiz et Pav. Melastomaceae (i). 25 trop. Am. 



Axinandra Thw. (BH. incl. Naxiandra Krasser). Melastomaceae (ill)- 

 (Lythraceae BH.} i Ceylon. 



Axiniphyllum Benth. Compositae (5). 2 Mex. 



Axis, the stem. 



Axonopus Beauv. = Paspalum L. (Gramin.). 



Axyris L. Chenopodiaceae (A). 6 Mid. and N. As. 



Ayapana, Eupatorium Ayapana Vent. 



Aydendron Nees. Lauraceae (n). 45 trop. Am. 



Ayenia Loefl. (Aniba Aubl.). Sterculiaceae. 25 trop. and subtrop. Am, 



Azadiracnta A. Juss. (Melia L. BH.) i Indomal. A. indica A. Juss. 

 (nim) has astringent medicinal bark, and yields good timber. 



Azalea Gaertn. = Loiseleuria Desv. ; Azalea L. = Rhododendron L. 



W. C 



