512 MINNESOTA BOTANICAL STUDIES. 
T. petaloideum Linn. Sp. Pl. 2 ed. 771. 1762. 
Stem round, nearly 1 ft. high, almost naked: leaves 3-5- 
parted; leaflets smooth, ovate, entire, or 3-lobed: flowers cor- 
ymbose, perfect; sepals white, rotund; filaments pink, anthers 
yellow: fruits ovate-oblong, striated, sessile. June—July. 
Northern Asia. Bot. Cab. g: 891. Not yet in trade lists but 
well worthy of use in gardens(f). Lec. 3. f. 75. 
T. clavatum DG: Syst. 1: 171. 1818. 
1. pipes Torr. & Gray, Fl. 12°38. 1838. 
IT. nudicaule SCHWEINITz ex T. & G. Fl. 1: 39. 1838. 
Plant glabrous, 1 to 2 feet high, branching above: leaves 2 
to 3 times ternate: leaflets oval to obovate, rather large, thin, 
about 3-lobed but variable, base variable: flowers perfect, in a 
cymose panicle; filaments spatulate and petal-like, with short, 
blunt anthers : akenes widely spreading on weak stalks of nearly 
their own length, obliquely ovoid, flattened; styles short; stig- 
ma minute. May, June. Wet mountain places, western Vir- 
sina to Alabama ({): Lec. 3. 7. zo. 
1, sparcifiorum Turcz. F. & M. Ind. Sem. Petrop. 1e: 
1835. 
I clavatum Toox. Filna:i2:,) 21839, notaDC. 
LT. fiuchardsonz ‘Gray, Am. Journ. Sci. 42: 17. a1G4ae 
Stem erect, sulcate, 2 to 4 feet high, branching, usually gla- 
brous: leaves triternate, upper ones sessile; leaflets short- 
stalked, round or ovate, variable in size and shape of base, round- 
lobed or toothed: flowers in leafy panicles on slender pedicels, 
perfect ; sepals obovate, whitish, soon reflexed ; filaments some- 
what widened; anthers very short: akenes short-stalked, ob- 
liquely obovate, flattened, dorsal margin straight; 8—10-nerved ; 
styles persistent. Northern Asia, through Alaska to Hudson 
Bay, in mountains in Colorado and southern California. Intro- 
duced to gardens in 1881. Lec. 3. f/f &. 
T. alpinum Linn. Sp. Pl. 545. 1753. 
Stems smooth, naked or 1-leaved, only 4 to 8 inches high, 
from a scaly rootstock: leaves tufted at the base, twice 3-5- 
parted; leaflets coriaceous, orbicular or cuneate at the base, 
lobed, revolute: flowers in a raceme, perfect; sepals greenish, 
equalling the yellow stamens: stigma linear; akenes small, ob- 
liquely obovoid. Newfoundland to Arctic Alaska, in Rockies 
