76 PROCEEDINGS OF THE ACADEMY OF 



5 12 . E. petaloidea, Engelm., with the small -flowered form named E. polyclada 

 byBoissier. 513. E. Fendleri, Torr. and Gray ; the inappendiculate form. 



-ffi 



CUPULIFER^. 



515. Quercus Douglasii, var. Neo-Mexicana, A. DC. 516. Corylus bos- 



TRATA, Ait. 



BETULACEiE. 



517. Betula gla^dulosa, Michx. " Subalpine, " 518. B. papyracea, 

 Michx., var., called B. alba, var. glutinosa in Parry's Enumeration. 519 . Alhus 

 viridis, Ait. 



SALICACE^I. 



520. Salix arctica, R. Br. 521. S. reticulata, L. This and the last are 



high alpine species. 522. S. rostrata, Richards. (&. vagans, Anders.) 



5 23. S, glauca, L. "Subalpine." 524. S. cordata, Mnhl., or vitellina, L. 



5%5_. Populto angustifolia, Torr. li Foot of the mountains." 526. P. bal- 



rajufe a, L., var. candicans. " Subalpine ; rather rare." 5277 1^. tremu- 

 loide<. Michx. 



CONIFERiE. 



525. Pacs PosDERO.SA, Dougl. ; Engelm. in Enum. PI. Parry, Suppl., p. 

 (39) 332. 529. P. flexilis, James ; Engelm., 1. c. 530. P. aristata, Engelm. 

 1. c. 531. P. cohtorta, Dougl. ; Engelm., 1. c. 532. P. epulis, Engelm. 533. 

 Abie- Menziesii, Lindl. 534. A. Douglasii. Lindl. 



ORCHIDACE^E. 



535. Platanthera hyperborea, Lindl. 536. P. obtusata, Lindl. 537. 

 Calypso borealis, Salisb. 5Jj£. Cypripedium parviflorum, Salisb. 539. 

 Spirasthes gemmipara, Lindl., from South Park, in the Rocky Mountains, 

 (and one or two specimens were collected by Dr. Parry on South Clear Creek, 

 July, No. 441) ;— quite resembling the Irish plant in aspect and in the label- 

 lum, etc., but the sepals rather narrower and less blunt, — mixed (in my set) 

 with taller specimens, from the plains, of a narrow-leaved form ofS. cernua, 

 having very large nipple-shaped calli on the base of the labellumT^The la- 

 bellum of the former, when flattened out, is in outline ovate or ovate-oblong, 

 with a narrowed subapical portion below the cordate-rotund erose-crisped 

 summit. The forms of S. cernua, or the species allied to it, are thus far quite 

 inextricable. The present Rocky Mountain specimens are exceedingly inter- 

 esting, whether absolutely identical or not with the much-vexed and isolated 

 S. gemmipara. They have not the long-acuminate bracts of S. Roman- 

 zoviana, of which -xcy specimens are too young to allow a comparison of the 

 flowers. 



ALISMACE.3E. 



. TincjLocHiN palustbe, L. 541. T. maritimcm, L. Both from themoun- 



IRIDACE^E. 



542. Iris teicax, Dougl. ? u Subalpine, and at lower elevations ; common." 

 Thi-, now collected in flower, we had in fruit, collected on the Laramie Moun- 

 tains by Dr. Hayden, and at Bridgets Pass by Mr. H. Engelmann. Thespathe 

 is more scarious and the capsules larger than in /. tenax. 



LILIACEiE, inch Smilaceje, Mblanthace.e, etc. 



M2^ Streptopus amplexifolius, DC. 544. Smilaoina stellata, Desf. 

 ,545. Allium stellatum, Fraser. 546. A.1§c5tKicoFRAsrM, L. ££^. A. cer- 

 huum, Roth. j>48. .Leucocbivux mostasum, Nutt. 549. Calochoktus vbbus- 



[Mar. 



