RANUNCULACEAE (CROWFOOT FAMILY) 399 



3. AD6NIS [Dill.] L. 



Sepals and petals (5-16) flat, unappendaged, deciduous. Achenes numerous, 

 in a head, rugose-reticulated. Seed suspended. Herbs with finely dissected al- 

 ternate leaves and showy flowers. ("ASwwt, a favorite of Venus, after his death 

 changed into a flower.) 



1. A. AUTUMNALIS L. (PHEASANT'S EYE.) Low leafy annual with scarlet 

 or crimson corolla darker in the center. (A. annua L., in part.) Occasional 

 iu lields. (Sparingly introd. from Eu.) 



4. TRAUTVETTERIA Fisch. & Mey. FALSE BUGBANB 



Sepals 3-6, usually 4, concave, petal-like, very caducous. Petals none. 

 Achenes numerous, capitate, membranaceous, compressed, somewhat 4-angled 

 and inflated. Seed erect. A perennial herb, with alternate palmately-lobed 

 leaves, and corymbose white flowers. (For Prof. E. B. von Trautvetter, an able 

 Russian botanist of the 19th century.) 



1. T. carolinSnsis (Walt.) Vail. Stems 6-9 dm. high; root-leaves large, 

 5-11-lobed, the lobes toothed and cut. (T. palmata Fisch. & Mey.) Moist 

 ground along streamlets, Md. and s. w. Pa. to Mo. and Ga. 



5. THALtCTRUM [Tourn.] L. MEADOW RUB 



Sepals 4-6, petal-like or greenish, usually caducous. Petals none. Achenes 

 4-15, grooved or ribbed, or else inflated. Stigma unilateral. Seed suspended. 

 Perennials, with alternate 2-3-ternately compound leaves, the divisions and 

 the leaflets stalked ; petioles dilated at base. Flowers in corymbs or panicles, 

 often polygamous or dioecious. (A Greek name of an unknown plant, men- 

 tioned by Dioscorides.) 



* Flowers perfect ; filaments club-shaped, erect or spreading. 



1. T. clavatum DC. Stem slender, glabrous, 3-4 dm. high, 1-3-leaved ; 

 radical leaves biternate ; leaflets large, thin, glaucous beneath, suborbicular, 

 coarsely and crenately 3-7-toothed ; flowers white, few ; achenes 6-10, flat, 

 falcate, tapering into a long and very slender stipe. By mountain streams, 

 W. Va. and Va. to Ga. and Ala. May, June. 



* * Flowers dioecious or polygamous. 

 - Achenes sessile, regularly ribbed, their walls of firm texture. 



2. T. confine Fernald. Glabrous and glaucous, 3-10 dm. high, from a slen- 

 der elongate caudex ; leaflets often 2-4 cm. broad, suborbicular, veins scarcely 

 prominulous beneath ; achenes maturing 2-5, about 8 mm. long including the 

 beak. Rocky and gravelly banks of streams, e. N. B., Que., and n. Me. to 

 n. N. Y. and Man. June, July. 



- - Achenes broadly spindle-shaped, conspicuously stalked; filaments thread- 

 like ; leaves 3-4-ternate. 



3. T. coriaceum (Britton) Small. Soots stout, bright yellow; common 

 petioles of the stem-leaves more or less developed, the base much dilated and 

 amplexicaul ; leaflets broadly obovate to suborbicular, 3-9-toothed or -lobed, 

 pale and glabrous beneath ; style nearly as long as the achene. Mts. of Pa. to 

 Ky., N. C., and Tenn. 



4 . T. caulophylloides Small. Similar; roots not yellow ; leaflets commonly 

 large, ren if onn -suborbicular, broader than long, pale beneath ; style thickish, 

 often hooked, about half as long as the achene. Mountain slopes and alluvial 

 banks, Md. to Ky. and Tenn. 



