U12 



UMBELLIFEKAE (^PARSLEY FAMILY^ 



6. ERIGENIA Nutt. Harbinger-of-Spring 



Calyx-teeth obsolete. Petals obovate or spatulate, flat, entire, white. Fruit 

 didymous, laterally flattened, the carpeis incurved at top and bottom, nearly 

 kidney-form, with 5 very slender ribs, and several (1-3) small oil-tubes in the 

 intervals. — A small glabrous vernal plant, with a simple stem, bearing one or 

 two 2-3-ternately divided leaves, and a few-flowered leafy-bracted umbel. 

 (Name from rjpiy^veia, horn in the spring.) 



1. E. bulbbsa (Michx.) Nutt. Stem 1-2.3 dm. high; leaf-segments linear- 

 oblong ; fruit 2 mm. long, 3 mm. broad. — Deciduous woods, etc., s. Ont. and 

 w. N. Y. to Minn., and southw. 



6. CHAEROPHYLLUM [Tourn.] L. 



Calyx-teeth obsolete. Fruit narrowly oblong to Imear, notched at base, with 

 short beak or none, and equal ribs, oil-tubes solitary in the intervals ; seed-face 

 more or less deeply grooved. — Annuals, with ternately decom- 

 pound leaves, pinnatiiid leaflets with oblong obtuse lobes, mostly 

 no involucre, involucels of many bractlets, and white flowers. 

 (Name from xat/JCii'. to gladden, and (pvWov, a leaf, alluding to the 

 agreeable odor of tlie foliage.) 



1. C. prociimbens (L.) Crantz. More or less hairy ; stems 

 slender, spreading, 1.5-5 dm. high ; umbels few-rayed ; fruit nar- 

 rowly oblong, 5-10 mm. long, glabrous, contracted but not tapering 

 at the summit, the intervals broader than the ribs. — Moist ground, 

 N. X. to N. C, w. to Mich., la.. Ark., and Miss. Fig. 820. 



Var. Sh6rtii T. & G. Fruit more broadly oblong to ovate (often 

 somewhat pubescent), not at all contracted at the summit. — Pa. to 

 Va., Ky., and O. 



2. C. Tainturieri Hook., var. floridanum Coult. & Kose. Stouter 

 and more pubescent than the preceding species ; fruits 7-8 in each 

 umbel, sessile or pediceled, glabrous, the ribs narrower than the 



intervals. — Barrens, Eagle Rock, Mo. {Bush)) S. C. to Fla. 



820. (,'. pro- 

 cumbens x 8 



7. OSMORHIZA Raf. Sw^eet Cicely 



Calyx-teeth obsolete. Fruit with prominent caudate attenuation at base, and 

 equal ribs. — Glabrous to hirsute perennials with thick aromatic roots, ternately 

 compound leaves, ovate variously toothed leaflets, few-leaved in- 

 volucres, and white flowers in few-rayed and few-fruited umbels. 

 (Name from dafirj, a scent, and pi'^a, a root.) Washingtonia Raf. 



* Bays of the umbel mostly bearing involucels. 



1. 0. Claytbni (Michx.) Clarke. Stems rather slender, 3-i) 

 dm. hi^h, villous-pubescent; leaves 2-3-ternate, crisp-hairy ; leaf- ^.m 

 lets mostly 4-7 cm. long, acuminate, crenate-dentate and somewhat JlRi 

 cleft; stipules ciliate-hispid ; fruit (not including the attenuate ■'" 

 base) 1-1.3 cm. long; stylopodium and style 0.7-1 mm. long. 

 {0. hrevistijlis DC; Washingtonia Claytoni Britton.) — Open 

 woods, e. Que. to w. Ont., s. to N. C, Ala., Mo., and Kan. 



2. 0. longistylis (Torr.) DC. Coarser; stems i-\2 dm. high, 

 glabrous or essentially so except at the nodes ; leaflets mostly 

 longer, le.ss cleft ; .stipules densely pilose on (he margin ; fruit 

 (excluding the attenuate base) 1.2-1.5 cm. long; the seed-face 

 more deeply and broadly concave than in the preceding ; stylo- 

 podium and style 2-4 mm. long. (Washingtonia Britton.) — 

 Rich woods, e.' Que. to Assina., s. to N. C. 111., la., S. Dak., and Col. Fig 

 821, Var. viLMCAUMS Fernald. Stems vvhite-villous. — Pa. to 111. and Kan. 



821. O. ]ongi- 

 stylis X 2. 



