106 
Dicentra,* Bernh. in Linnaea, viii. 457, 468 (1833); Asa 
Gray, Synop. Fl. N. Amer. i. 93 (1895). 
“Key TO THE SPECIES. 
Section I. Cucullaria. Stemless plants 
with scapose inflorescence 
Series A. Fibrosae. Roots fibrous, long 
and slender ; Asiatic species : 
Inflorescence simple ; E. Siberia - 1. D. peregrina. 
Inflorescence branched laterally ; 
Japan < = - 2. D. pusilla. 
Series B.. Repentes. Rhizome creeping, 
not tuberous; N. Amer. species : 
Petals united to above the middle ; 
ee of outer petals not acu- 
ate ; Western Unit. States - 3. D. formosa. 
Pas ealy separating to much : 
e middle ; tips of outer 
cael MOREE Eastern Unit. 
States - 4. D. eximia. 
Series C. Tuberosae. Tuberous Sci 
or rhizome bearing small tubers ; 
. Amer. species : 
Inflorescence several-flowered : 
Flowers cordate at the base - 5. D. canadensis. 
Flowers widely sagittate at the 
ase : 
Spurs about 8-10 mm. long ; 
Eastern States and Canada- 6. D. eucullaria. 
Spurs about 12 mm. on ; Rocky 
ates - - 7. D. occidentalis. 
Inflorescence es gates Western 
United Sta 
Tip ae aaa ‘petals, shorter than 
y, remaining erect or 
pe Ges lower part deeply 
pouched at the base; inner 
petals not hastate in the 
middle - - - 8. D. pauciflora. 
Tip of outer petals longer than the 
body, soon abruptly reflexed, 
shallowly pouched at the ae 
inner petals sete hasta 
in the middle - - a D. unifiora. 
* The name Dicentra is reserved by the International Bot. Congress of 
Vienna, 1905, in preference to the older names Capnore — Borckh., 
Bikukulla, Adans., Diclytra, Borekh., and Dielytra, Ch. & 8 
