lie. 



I. C. procumbens Cianl/, I'mhcl, 77. More Of k-ss 

 haiiv: stems slender, sprejuliM<j^, (\ to IS inches high: umlwl sessile 

 or pedunclcd, few-rayed: rays 1 to "j inches long: pedicels from 

 4 lines long to almost wanting: fruit (in the type) narrowK 

 ohlong, 2 '2 to i\}4 lines long, glabrous, contracted but not taper- 

 ing at summit, intervals broader than the ribs: seed-face deeply 

 sulcate. (Fig. 180.) 



\ew York to New Jersey niul \. Carolinji. and wcstwaid lo MichiKari. 

 Iowa, Arkansas, and Mississippi. 



We consider this polymorplious species to inoliide all our forms of 

 Chtnopln/Hinti. The only characters that can be used to separate them 

 specifically nuist be drawn from the beaking of the fruit, the size of the 

 ribs, and the depth of the sulcus of the seed-face. Isolated specimens can 

 be selected wliich seem distinct enough in these particulars, but a study of 

 a great number of specimens from all regions shows an inextricable running 

 together, and it seems impossible to draw specific lines. Characters that 

 have been useil to define species are found displayed on the same plant. 

 Owing to intergrading forms even vjirieties cannot in all cases be distinctly 

 set apart, but the following extreme foims may. in some cases, be distin- 

 guished from the specific type by means of mature fruit. 



Var. Shortii Torr. tK: Gray, Fl. i. (>87, has moje broadly 

 oblong to ovate (often somewhat pubescent) fruit, not at all con- 

 tracted at summit. 



Kentucky lo Arkansas and Louisiana. 



Var. Tainturieri C. t^ R. Bot. Gazette, xii. 1(50, has fruit 

 tapering at summit or beaked, ribs very prominent and mucii 

 ))roader than the intervals, and seed-face with a shallower sulcus. 

 (Fig. 181.)— C. 7a/u/ffr/rr/ Hook. 

 From Florida to Texas. 



^'ar. dasycarpum C iS: R. 1. c, differs from the preceding 



Narictv in ha\ iiig ])ubcsccnt fruit, with ribs prominent but nar- 

 rower than the intei\als. ( I' ig. 18*i.) — C. Tainturieri^ var. Jasy. 

 carp inn Hook. 



Tex'Ai^ (T{(tll 2M). "pubescent form," and /.//((//</ ///m/- inc.) and Louis- 

 iana, near New Orleans (Dnnmnotnl \'M\). 



41. OSMORIIIZA Raf. in DC. Prod. iv. L^8*i.— Glabrous 

 to hirsute perennials, from thick aromatic roots, 1 to 8 feet high, 

 with ternatelv decompound leaves, ovate variously toothed leaflets, 

 involucre and involuccls few-leaved or wanting, and white 

 flowers in few-rayed and few-fruited umbels. — Incl. Glycos- 



