Davis: THALICTRUMS OF NORTH AMERICA. 513 
to southern Colorado, Europe, northern Asia, Greenland and 
feeland. Bot; Mag. 22397.": Lec} 4.7. 27/(f). 
T. minus Linn. Sp. Pl. 546. 1753. 
T. saxatele VILL. Prosp. 50. 1779. 
T. purpureum Scuane. in Pall. N. Nord. Beitr. 6: 42. 
1794- 
T. saxatilis Horr. 
Stems round, sulcate, 1 to 2 feet high: leaflets variable, acute 
or obtusely lobed, often glaucous: flowers drooping in loose 
panicles, perfect; sepals yellow or greenish: fruit ovate-oblong, 
sessile, striated. Summer. Europe, Asia, northern Africa. 
A polymorphous species in the variation of the leaflets. Lec. 
Sy Fy 4- 
Var. adiantifolium Horr. 
TI. adriantoides Horr. 
T. adiantifolium Bess. ex Eichw. Skizze 182. 1830. 
Leaflets resembling those of Adzantum,; a form much used 
and admired. 
Var. Kemense TRELEASE, |. c. 300. 1886. 
T. Kemense Friss, Fl. Holland, 94. 1817-18. 
T. minus var. elatum Lec. 1. c. 283. 1885. In part. 
Leaves thrice-ternate ; otherwise much like the type. 
fy elaucum Drsr. Thal. 1 ed. 123. 1804. 
I. speciosum Horv. ex Porr. Encycl. 5: 315. 1804. 
Stems erect, round, striated, glaucous, 2 to 5 feet high: leaf- 
lets ovate-orbicular, 3-lobed, lobes deeply toothed: flowers in 
an erect panicle, perfect; sepals and stamens yellow: fruits 4 
to 6, ovate, striated, sessile. June, July. Southern Europe. 
ec. 5, 7.3. 
T. purpurascens Linn. Sp. Pl. 546. 1753. 
7. rugosum Pursu. Fl. 2: 389. 1814. 
I. revolutum DC. Syst. 1: 173. 1818. 
me Cornutt var. a. HooK. Plo rage t20 1839: 
T. dasycarpum Fiscu. & Lau. Ind. Sem. Hort. Petrop. 
Aas Tod... %, 
T. purpureum Horr. 
A polymorphous species, allied to 7. polygamum: stem 3 to 
6 feet high, branching above, leafy, pubescent or glabrous, 
sometimes glandular; leaflets larger than in that type: flowers 
