~ THE IDENTITY OF HEUCHERA CYLINDRICA. 
By CHARLES V. PIPER. 
In the original description of Heuchera cylindrica Douglas,’ the 
species is stated to occur “On the declivity of low hills, and on the 
steep banks of streams on the west side of the Rocky Mountains.” 
This has always been puzzling from the fact that the plant accepted 
by all American botanists as Heuchera cylindrica occurs only in and 
west of the Cascade Mountains, and grows mainly in copses about low 
moist meadows. An examination of the Douglasian specimens at 
Kew and in the British Museum clears up the discrepancy. At Kew 
there are two sheets, one of which is labeled exactly as quoted by 
Hooker. The other sheet is of the same species, and with scarcely a 
doubt of the same collection, but is labeled merely Heuchera cylindra- 
cea [sic] Dougl. The plant is not at all the one taken by American 
botanists for Heuchera cylindrica, but is the one recently named 
Heuchera columbiana by Rydberg.? Another Douglasian sheet in 
the British Museum has two different species mounted upon it, but 
each is numbered and the label reads: 
“In dry mountain woods near Kettle Falls. 1. H.cylindracea. 2. Heuchera.” 
This writing is in ink and is identified by Dr. A. B. Rendle as that 
of Sir W. J. Hooker. In the lower left-hand corner of the sheet 
written in pencil is the following: “ Heuchera cylindrica Dougl. Flor. 
Bor. Am.” Such pencil inscriptions in the same hand occur on many 
. of the Douglas sheets in the British Museum, but the handwriting is 
not identified. Plant no. 2, unnamed, is a young specimen of the 
species that all American botanists have been calling Heuchera cylin- 
drica, namely, Torrey and Gray,’ Brewer and Watson,‘ Wheelock,’ 
Howell,® Rydberg,’ Rosendahl,* and Piper.° 
As the plant called Heuchera cylindrica by American botanists is 
unnamed, it is here described as a new species. 
1 Hook. Fl. Bor. Amer. 1: 236. °F. Northw. Amer. 203. 1898. 
2N. Amer. Fl, 22:116. 1905. ™N. Amer. Fl. 227:115. 1905. 
3H], N. Amer. 1:580. 1840. ® Bot. Jahrb. Engler 377: 80. 1905. 
*Bot. Calif. 1:201. 1876. *Contr. U. S. Nat. Herb. 11:322. 1906. 
* Bull. Torrey Club 17: 202. 1890, 
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