OF ARTS AND SCIENCES: FEBRUARY 13, 1872. 405 



529. Camassia esculenta Lindl. ; Hook. 1. c. With mature 

 fruit. 



530. Allium acuminatum Hook. Fl. Bor.-Am. 2, t. 196. 



531. Allium serratum S. Watson, Bot. King Expl. p. 487, t. 37, 

 f. 4, 5. 



532. Tofieldia glutinosa Willd. ; Hook. Fl. Bor.-Am. 2, t. 191. 



533. Xerophyllum setifolium Michx., var. Lindl. Bot. Reg. 

 t. 1613. X. tenax Pursh, Fl. 1, t, 9. In fruit. 



534. Zygadenus Nuttallii Gray ; Watson, 1. c. Amianthium 

 NuttaUU Gray, Melanth. Rev. 



535. Stenanthium occidentals, n. sp. Caule subaphyllo (semi- 

 pedali ad bipedalem) gracili ; foliis aut lineari- aut lato-lanceolatis basi 

 attenuatis ; racemo laxifloro seu panicula simplici ; pedicellis gracilibus 

 mox nutantibus bracteam longe superantibus ; perianthio purpureo- 

 flavescente, pliyllis lanceolatis ultra medium campanulato-conniventibus 

 apice recurvo attenuato-aeuminatis ; seminibus utrinque anguste ala- 

 tis. — Collected in the " Rocky Mountains " by Bourgeau, 1858 ; and 

 " Cascade Mountains, lat. 49°, 1859, Kootenay, 1860, Rocky Moun- 

 tains lat. 49° at 6000 feet above the level of the sea, 1861," Dr. 

 Lyall ; and now by Mr. Hall in the foothills of these mountains, upon 

 mossy banks of streams. A striking species. Flowers from 6 to 20 in 

 the raceme or simple panicle, polygamous, over half an inch long : peri- 

 anth apparently greenish purple with the recurved tips yellowish. 

 Pedicels longer than the flowers and the more or less scarious bracts, 

 slightly thickened at the apex. Ovary free from the perianth except 

 the extreme base. Mature capsule an inch long, including the slender 

 persistent styles. Seeds with the narrow wing 3 to 4 lines long. 



536. Juncus effusus L. : with open panicle. 537. Var. brun- 

 neus Engelm. Rev. June. p. 491 ; a slender form. 



538. Juncus patens E. Meyer. ; Engelm. 1. c. p. 443. 



539. Jdncus Drummondii E. Meyer ; Engelm. 1. c. p. 444. 



540. Juncus tenuis Willd., var. secundus Engelm. 1. c. 541. 

 Var. congestus Engelm. 1. c. Two extremely marked forms. 



542. Juncus bufonius L. 



543. Juncus triformis Engelm. 1. c. p. 492. Collected in im- 

 mense abundance. 



544. Juncus falcatus E. Meyer; Engelm. 1. c. p. 452 & 495. 

 545. Larger and capitate form, with mature fruit. 



546. Juncus longistylis Torr. Bot. Mex. Bound, p. 223 ; 

 Engelm. 1. c. In small quantity, at the Cascades. 



