ARTANEMA 55 



Aristolochiales. The isth order of Dicot. Archichl. 



Aristotelia L'Herit. Elaeocarpaceae. 10 S. temp. 



Arjona Coinm. ex Cav. Santalaceae. 9 temp. S. Am. 



Armed, thorny. 



Armeniaca Tourri. ex Mill. =Prunus Tourn. (Rosac.). 



Armeria Linn. Plumbaginaceae. 60 N. temp, and andine. A.vulgaris 

 Willd. (tlirift, sea pink) common on the coast of Brit, and in high 

 mountain regions of Scotland, a fairly frequent phenomenon, due 

 perhaps to similarity of conditions. Primary root perennial ; each 

 year's shoot dies down all but a short piece, on which the following 

 year's shoot arises as an axillary branch. Infl. a capitulum of cincinni, 

 surrounded by a whorl of bracts, the outer forming a sheath round the 

 top of the peduncle. After fert the K becomes a membranous funnel- 

 like organ aiding seed-distribution by wind. 



Armoracia Gaertn. = Cochlearia L. and Nasturtium R. Br. (Cruc.). 



Arnatto, arnotto, Bixa Orellana L. 



Arnebia Forsk. Boraginaceae (iv 4). 12 Medit., trop. Afr., Himal. 

 Some have black spots on the C, which fade as it grows older (see 

 fam., and cf. Diervilla, Fumaria, &c.). 



Arnica Rupp. ex L. Compositae (8). 50 N. temp, and arctic. 

 Tincture of arnica is prepared from all parts of the pi. 



Arnicastrum Greenman. Compositae (6). i Mex. 



Arnocrinura Endl. et Lehm. Liliaceae (in). 3 S.W. Austr. 



Arnoseris Gaertn. Compositae (13). i, A. pusilla Gaertn., Eur. 

 (incl. Brit.). The bases of the invol. brs. enclose the ripe fr. 

 (cf. Rhagadiolus). 



Arnottia A Rich. Orchidaceae (n. i). 2 Mauritius. 



Aroideae (/>//.) = Araceae. 



Arodendron Werth. (Typhonodorum p.p.). Araceae (v). i Zanzibar. 



Aronia Pers. = Amelanchier Lindl. (Rosac.). 



Aronicum Neck. = Doronicum L. p.p. (Compos.). 



Arpophyllum Llave et Lex. Orchidaceae (n. 6). 6 C. Am., W.I. 



Arrabidaea DC. Bignoniaceae (i). 100 S. Am. 



Arracacia Bancroft. "Umbelliferae (ill. 4). 45 Peru to Mex. A.xantho- 

 rhiza Bauer and others cult. ed. tuberous r. 



Arrack, cf. Borassus, Cocos, &c. 



Arrhenatherum Beauv. Gramineae (9). 3 Eur., Medit. A. avenacetim 

 Beauv. (false oat-grass, French rye-grass), Brit. 



Arrhostoxylmn Mart. = Ruellia L. p.p. (Acanth.)- 



Arrow-grass, Triglochin ; -head, Sagittaria sagittifolia L. 



Arrowroot, a pure starch obtained from various pi.; Bermuda-, 

 W. Indian-, Maranta arundinacea L.; Brazilian-, Afaiiihot utilissima 

 Pohl. ; E. Indian-, Curcuma angiislifolia Roxb., Tacca pinnatijida 

 Forst. &c.; Portland-, Arum niaculatum L. Cf. Canna, Zea, &c. 



Arrowsmithia DC. Compositae (4). i S. Afr. 



Arsenococcus Small (Vacdnium p.p.)- Eric. (in. i). i Atl. U.S. 



Artabotrys R. Br. Anonaceae (4). 23 palaeotrop. Some cult, for 

 sweetly scented fl. and ed. fr. They usually climb by aid of recurved 

 hooks, which are modified infl. axes, and thicken and lignify when 

 they clasp. 



Artanema D. Don. Scrophulariaceae (li. 6). 4 Indomal. 



