239 MR. GEYER’S ROCKY MOUNTAIN PLANTS. 
2. H. Americana, L.—Torr. et Gr. Am. 1. p. 577.—var. 
minor. z 
Has. Var. On the first ranges of the high Trappe-rock moun- 
tains, opposite the * Red Butter,” on the Upper Platte and 
Sweet Water Rivers. July. (n. 118.)—This was gathered 
by Dr. James up the Missouri; but the species does not 
seem to have been found beie in mountain regions. 
3. H. Richardsoni, Br. in Richards. App. Frankl. Journ. p. 
53. t. 29. Hook. Fl. Bor. Am. 1. p. 237. 
Has. Rocks and sandy stony declivities, Upper Columbia 
River. Mature leaves coriaceous. May. (n. 388.) 
4, Mitella trifida, Grah.— Hook. Fl. Bor. Am. 1. p. 241. t. 82. 
Torr. et Gr. Am. 1. p. 587. Lithophragma nudicaule, Nutt. 
mst. 
Has. Shady alpine woods, Cœur d’Aleine Mountains, near 
St. Josephs. May. (n. 623.) 
5. Lithophragma parviflora, Nutt.—Torr. et Gr. Am. 1. p. 
. 584. Tellima parviflora, Hook. Fl. Bor. Am. 1. p. 299. — 
t. 78. A.—$. micrantha, Torr. et Gr.—L. micrantha, Nutt. — 
mst. in Torr. et Gr. et in herb. nostr. | ; 
Has. «. and f. Open mountain slopes, rocks and stony 
plains, = age March-May. (n. 619.) 
| UMBELLIFERA, Juss. ~ 
1. Eryngium articulatum ; aquaticum subelatum, caule striato — 
~- superne dichotome diviso, foliis lanceolatis longe (radical — 
ae longissime) | petiolatis cuspidato-acuminatis | spinu- Pede 
-loso-serratis - penninerviis reticulatis nervis primariis pe 
~ rallelis, petiolis costisque latissimis artieulatis radicalibus 
E — teretibus. caulinis planis canaliculatisve spinuloso-ciliatis, 
foliis involucralibus capitula parum ss mee ate anceolatis — 
. rigidis basi spinoso-pinnatifidis. - S 
= ix Very abundant at the stony edges of the Spokan R River, 
. and Skitsoë and Cœur d'Aleine Lakes. Flowers a true 
. amethyst colour. Aug. Sept. (n. 583)—A remarkable and. 
. distinct species, with tufted fibrous roots. = In April 
~ young plants are wholly submerged, and pr 
= a. of some ec P 
