98 PROCEEDINGS OF THE AMERICAN ACADEMY 



§ 2. Not mealy, but more or less glandular-pubescent, aromatic. 

 Seed obtusely margined, scarcely a third of a line broad, often 

 vertical in a 2-3-sepaled calyx. Embryo imperfectly annular. — • 

 § BoTRYOis, Moquin. Introduced from Tropical America. 



11. C. BoTRYS, Linn. Viscid throughout, erect, 1-2 feet high, 

 branched ; leaves ovate to oblong, 1-2 inches long, obtuse, truncate or 

 cuneate at base, sinuately pinnatifid and the lobes usually toothed ; 

 flowers subsolitary in naked slender diffuse axillary panicles ; calyx- 

 lobes acute, loosely enclosing the fruit ; pericarp persistent. — Collected 

 in Oregon and Utah, and common eastward. 



Chenopodium Botrys, Linn. Pursh, 198. Nuttall, Genera, 1. 199. Elliott, 

 1. 130. Hooker, Conip. Bot. Mag. 2. 61. Chapman, 376. Gray, Man. 

 407. Watson, King's Rep. 5. 288. 



Ambriua Botri/s, Moquin. Torrey, Flora N.Y. 2. 134. 



Collectors : — 854 Kell. & Harford ; 975 Watson. 



12, C. AMBROSioiDES, Linn. Smoothish, scarcely glandular, erect 

 or ascending, 2-3 feet high, usually stout and branched ; leaves lanceo- 

 late, 2—5 inches long, sinuate-dentate, or the xipper linear-lanceolate 

 and entire, acute, attenuate to a short petiole ; flowers in dense axillary 

 clusters or short simple dense axillary spikes upon the leafy branches ; 

 calyx-lobes obtuse, appressed ; styles 3, sometimes 4 ; pericarp decidu- 

 ous. — Eastwai'd, and in California from San Francisco to San Diego. 



Chenopodium amhrosioides, Linn. Hooker, Comp. Bot. Mag. 2. 61. Hook. & 

 Arn. Bot. Beech. 157. Nuttall, Fl. Ark. 165. Engelm. PI. Upp. Miss, 

 206. Torrey, Pac. R. R. Rep. 7. 18. Gray, Manual, 408. 



Amhriiiii ainhrosioidfs, Spach. Torrey, Flora N.Y. 2. 135. 



Roubieva ambrosioides. Carey, Am. Jour. Sci. 2. 7. 169. 



Chenopodium anthelminticum. Bolander, Catalogue, 25; not Linn. 



Collectors : — 6461 Bolander ; 32, 2402 Brewer ; 426 Cooper ; 3202 Ber- 

 landier ; Lindheimer ; Parry. 



Var. ANTHELMINTICUM, Gray. Spikes more elongated, often com- 

 pound and bractless ; leaves usually more deeply toothed ; said to bo 

 perennial. — From the Mississippi and Texas eastward. 



Chenopodium anthehiinticum, Linn. Michaux, Flora, 1. 173. Raf. Med. 

 Flora, 1. 103, fig. 21. Hooker, Comp. Bot. Mag. 2. 61. Moquin, DC, 

 Prodr. 132. 73. Torrey, Bot. Mex. Bound. 182. Chapman, 377. 



Ambrina anihelmintica, Spach. Torrey, Flora N.Y. 2. 135. 



Rouhieva anthelniintica. Carey, Am. Jour. Sci. 2. 7. 169. 



Chenopodium ambrosioides, var. anthelminticum. Gray, Manual, 408. 



