74 FLOR. TELLUR. 



274. Pleurendotria reniformis Raf. Litho- 

 fragma do Nuttall. excl. Syn. Hooker. Annua, 

 pubescens, fol. renif. trilobis incisis, racemo cy- 

 moso — Oregon Mts. flowers pale rosate, Nuttal 

 blends it with tlie last, but says it has sometimes 

 8 stamens only, and 2 styles. Both very diffe- 

 rent from Mitella grandiflora type of G. Tel- 

 lima^ which has 5 Stamens. 



275. Petalosteira R. (pet. sterile) diff. 

 Tiarella by no petals, but 12 to 20 stamens 

 whereof 3 to 10 are sterile and petaloid, all in 

 a row. — Types 1. P. nnifolia Raf. Tiarella do 

 Retz, Vitm. Hooker fl. bor. t. 81. — 2 P. laci- 

 niata Raf.Tiar. do Hook. t. 76. both from boreal 

 America. 



276. Tiarella L. auct. This G. properly 

 differs from Mitella by Capsule of two unequal 

 valves and petals entire, it is therefore less na- 

 tural than many of the above. The type is 

 Tiarella cordifoUa^ with calix Sparted ; all the 

 other sp. are doubtful, each appearing the type 

 of a subgenus at least, while T. Bracteata and 

 hiternata lack the 10 Stamens or unequal valves, 

 and must form the two next Genera. 



277. Oreotrys (Mt. cluster.) Raf atl. journ. 

 p. 145. in 1832. Diff. Tiarella^ calix campanul. 

 5fido, petalis 5 linearis parvis, Stam. 5, petalis, 

 alt. subul.Stylis 2,capsula semi-infera birostrata, 

 valvis equalis staminiferis. Acaulisfl. racemosis 

 hracteatis. — Nearer Heuchera to which Dec. 

 unites it than to Tiarella. One type. 



278. Oreotrys bracteata Raf. Fol. rad. ces- 

 pitosis subrot. cordatis, inciso serratis glabris 

 petiolis pubescens: racemo simplex, bracteis 

 lanceolatis. — Mts. Oregon. Tiarella bracteata, 

 Torrey, Eaton, Heuchera do Dec. Perennial, 

 calix obovate segments. 



