612 



UMBELLIFERAE (PARSLEY FAMILY) 



5. ERIGENIA Nutt. Harbinger-of-Spring 



Calyx-teeth obsolete. Petals obovate or spatulate, flat, entire, white. I'ruit 

 didymous, laterally flattened, the carpels 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 r/pty^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 [Tpurn.] L. 



Calyx-teeth obsolete. Fruit narrowly oblong to linear, 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, pinnatifid leaflets with oblong obtuse lobes, mostly 

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

 (Name from x^'-P^'-^^ to gladden^ and cpvXXov, a leaf, alluding to the 

 agreeable odor of the foliage.) 



1. C. procumbens (L.) Crantz. ]\Iore 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. Y. 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. & Pose. Stouter 

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

 umbel, sessile or pediceled, glabrous, the 7'ibs narrower than the 

 Barrens, Eagle Rock, Mo. (Bush); S. C. to Fla. 



820. C. pro- 

 cumbens X 3 



intervals. - 



7. OSMORHIZA Eat Sweet 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 oo-yn^, a scent, and pL^a, a root.) Washingtonia Raf. 



* Bays of the umbel mostly bearing involucels. 



1. 0. Claytbni (Michx.) Clarke. Stems rather slender, 3-9 

 dm. high, viJlons-pubescent ; leaves 2-3-ternate, crisp-hairy ; leaf- 

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

 cleft; stipules cil late-hispid ; fruit (not including the attenuate 

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

 (O. brevistylis 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 4-12 dm. high, 

 glabrous or essentially so except at the nodes •; leaflets mostly 

 longer, less cleft ; stipules densely pilose on the 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 arid 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. villicaulis Fernald. Stems white-villous. —Pa. to 111. and Kan. 



