164 AST 



and downy ;) flowers racemed ; petals linear ; germs puoescem ; 

 segments of the calyx glabrous. 



1912. ARUM. 



Triphyl"lum, (Indian turnip, wild turnip, wake robin, O. p. g. & w. 

 M. '4) sub-caulescent; leaves ternate; leafets ovate; acuminate, 

 spadix club-form ; spatha ovate, acuminate, peduncled with the la- 

 mina as long as the spadix. One variety, virens, has a green spa- 

 tha, another, atropurpurcum, has a dark purple spatha ; another, al- 

 bum has a white spatha. 1 3. f. 



185. ASCLEPIAS. (From ^Esculapius, the Founder of 



Medicine.) 



1 . Leaves opposite. 



Syri'aca, (common milkweed, O. w. p. Ju. 1J.) stem very simple ; 

 leaves lanceolate-oblong, gradually acute, downy beneath ; umbels 

 sub-nodding, downy, 3 to five feet high ; flowers in large, close clus- 

 ters, sweet-scented pollinia are fly traps. 3 5. f. 



Incarna'ta, (O. r. Ju. 1}.) stem erect, branching above, downy ; leaves 

 lanceolate, sub-downy both sides ; umbels mostly double at their ori- 

 gin; the little horn of the nectary exsert. A variety pulchra is more 

 hairy. Var. glabra, almost glabrous. Var. alba, has white flowers. 

 Damp. 3. f. 



61. ASPARAGUS. (A Greek name.) 



Exotic. 



Officina"lis, (asparagus, Ju. 7J.) stem herbaceous, unarmed, sub-erect 

 terete; leaves bristle-form, soft ; stipules sub-solitary. Naturalize;! 

 in the northern and southern districts. 4. f. 



172. ASTER. (A Star.) 

 Leaves entire. 



Linariifo"lius, (star-flower O. p. y. Au. Tj.) leaves thick-set, nerve 

 kss, linear, mucronate, dotted, carinate, rough, stiff, those on the 

 branches recurved; stem sub-decumbent ; branches level topped, 1- 

 flowered ; calyx imbricate, of the length of the disk ; stem rough, 

 purplish. 



Multifl'orus, (O. w-y. Au. to Nov. Tj.) leaves linear, smoothish ; stem 

 very branching, diffuse, pubescent; branchlets one way; calyx im- 

 bricate ; scales oblong, scurvy, acute. 



Cya'neus, (O. b-p. Au. Ij.) leaves linear-lanceolate, clasping, smooth ; 

 stem wand-like-panicled, very glabrous ; branches racemed ; scales 

 of the calyx lax, lanceolate, equalling the disk, inner ones coloured 

 at the apex. 34. f. Flowers many and large. This is the hand- 

 somest of all asters. 



Leaves more or less cordate and ovate, serrate, or toothed. 



Panicula'tus, (O. b-p. Au. to Nov. 7J.) leaves ovate-lanceolate, subser- 

 rate, petioied, glabrous; radical ones, ovate heart form, serrate, 

 rough, petioied ; petioles naked ; stem very branching, glabrous : 



7 



