80 BOTANY. 



VACCINIUM PARVIFOLIUM, Smith; Hook. Bor.-Am. 2, p. 33, t. 128. Cascade mountains, O. T. 



VACCINIUM OXYCOCCUS, Linn.; Hook. Flor. Bor.-Am. 2, p. 34. Sphagnous marshes. Cascade 

 mountains, 0. T. 



VACCINIUM OVALIFOLIUM, Smith; Hook. Flor. Bor.-Am. 2, p. 32, t. 127. Cascade mountains, 0. T. 



VACCINIUM MYRTILLOIDES, Michx.; Hook. Flor. Bor.-Am. 2, p. 32. Cascade mountains, 0. T. 



VACCINIUM OVATUM, Pursh; Hook. Flor. Bor.-Am. 2, p. 33. Cascade mountains, 0. T. 



VACCINIUM OESPITOSUM? Michx.; Hook. Flor. Bor.-Am. 2, p. 33, . 126. Cascade mountains. 



CHIMAPHILLA UMBELLATA, Pursh; Hook. Flor. Bor.-Am. 2, p. 49. N. California and Cascade 

 mountains, 0. T. 



PYROLA APIIYLLA, Smith; Hook. Flor. Bor.-Am. 2, p. 48, t. 137. Pine forests, N. California, 

 and Cascade mountains, 0. T. 



PYROLA ROTUNDIFOLIA, Linn.; Hook. Flor. Bor.-Am. 2, p. 46. McCumber s, N. California. 



PYROLA DENTATA, Smith; Hook. Fl. Bor.-Am. 2, p. 46, t. 136. var. INTEGRIFOLIA, Cascade moun 

 tains, 0. T. 



PYROLA MINOR, Linn.; Hook. Flor. Bor.-Am. 2. p. 45. Crater Pass, Cascade mountains ; 

 altitude 6,500 feet. 



PTEROSPORA AXDROMEDEA, Nutt.; Hook. Flor. Bor.-Am. 2, p. 48. Pine woods throughout N. 

 California and Oregon. 



CASSIOPE TETRAGONA, Don. in DO. Prod. 7, p. 611. Andromeda tetragona, Linn. Flor. Dan. 

 t. 1030; Pursh. Flor. p. 290; Hook. Bot. Mag. t. 3181 ; Flor. Bor.-Amer. 2, p. 58. Crater 

 pass, Cascade mountains. 



HEMITOMES, nov. gen. MONOTROPEARUM. (By A. GRAY.) 



Calyx disepalus, bracteoliformis. Corolla tubuloso-urceolata, 4-5-loba, post anthesin mar- 

 cescens, lobis patentibus intus villosulis. Stamina hypogyna, 8 vel 10 : filamenta filiformia, 

 superne barbata: anthers basifixre, glandula parva apiculata, dimidiatim unilocularis ; nempe, 

 loculo fertili oblongo-lineari longitrorsum dehiscente, altero ad costam billamellatam reducto. 

 Discus nullus. Ovarium ovoideum, pseudo-quinqueloculare, nempe placentae 4 bilamellatse 

 videntur, divaricates, et inter se coalitae circum locellum centralem, extus intusque creberrime 

 ovuliferae. Stylus elongatus : stigma depressocapitatum, integerrimum, umbilicatum, per- 

 vium. Fructus ut videtur carnosus evalvis. Rhizophytum brunneum, carnosum ; caule sim- 

 plici squamato ; floribus sessilibus in capitulum terminale congestis bracteatis. 



HEMITOMES CONGESTUM. (Plate XIII.) Upper Des Chutes valley ; September. 



The addition of a new genus to the small order or sub-order Monotropece, is a matter of no 

 small interest ; and this, founded on a fragmentary, but yet an adequate specimen, is the third 

 which has come to our knowledge from the Pacific border of the United States.* The plant 

 has much the aspect of a Monolropa of the section Hypopitys ; but is remarkable for bearing its 

 flowers in a dense, terminal, nearly hemispherical head. Each flower is subtended by a scaly 

 bract, nearly like the scales of the stem, and about as long as the corolla. The outer flowers 

 appear to be all tetramerous and octandrous, like the lower ones of Hypopitys, but some of the 

 inner ones have a 5-lobed corolla, and, I believe, 10 stamens. A pair of narrowly-linear 

 persistent lateral bractlets represent the calyx. The scarious-membranaceous corolla is urceolate- 



Namely, Barcodes of Torrey, (which is admirably illustrated in the Plantae Frdmontiaiue, p. 17, plate 10, and which was 

 near the same time published in California by Dr. Kellogg, under the name of Pterosporopsis, ) and Allotropa, the single known 

 species of which Allotropa virgata, Torr. & Gray, ined. was gathered on the Cascade mountains of northern Oregon, by Ur. 



