612 



UMBELL1FERAE (PARSLEY FAMILY,) 



5. ERIGENiA Nutt. HARDING ER-OF-SPRING 



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

 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 fipiyfveia, born in the spring.} 



1. E. bulbosa (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 south w. 



6. CHAEROPHYLLUM [Tourn.] 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. 



I I J (Name from xa/pcty, to gladden, and ^i/XXov, a leaf, alluding to the 



ill agreeable odor of the 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. 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. TainturiSri Hook., var. floridanum Coult. & Rose. Stouter 

 cumbens'xs an( ^ 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. C. pro- 



7. OSMORHtZA Raf. 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 6<r/j, ascent, and pifa, a root.} WASHINGTONIA Raf. 



* Rays of the umbel mostly bearing involucels. 



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

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

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

 cleft; stipules ciliate-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 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. viLLicAtfus Fernald. Stems white-villous. Pa. to 111. and Kan. 



S21. O. longi- 

 strlis x .'. 



