289 



P. longibracteata Broth. (Bot. Centralbl. 1890 No. 52.) 



Dioica; caespitosa, caespitibus laxiiisculis, e glauco- 



viridi albicantibus, iiitidiusculis-, caiilis ad 2 cm usque altuSj 

 rubcUus, gracilis, erectus, flcxuosus, simplex, infiraa basi 

 tantura fusco-radiculosus, laxe foliosus; folia patcntia, lorige 

 decurrcntia, subplana, lincari-lanceolata, breviter acuminata, 

 acuta, media et superiora circa 2,6 mm longa et circa 0,5 nun 

 lata, marginibus e basi ad medium parcc revolutis vol sub- 

 planis, ex apice ad medium serralis, baud limbatis, nervo 

 pallido, basi circa 0,075 mm lato, infra apicem evanido, 

 ccllulis omnibus elongatis, angustis, 0,015—0,017 mm latis, 

 parce chloropbyllosis, laevissimis. Planta mascula eisdem 

 stcrilibus similis, gracilior, foliis remotioribus, patulisj 

 perigonium discoideum; bracteae perigonii internae 

 patulae, e basi paullo latiore, concava longissime lineari- 

 lanceolatac, usque ad 5 mm longac, acutae marginibus 

 planis, ubique fere scrratis, nervo infra apicem evanido, in- 

 tiraac brevissimac, late spathulato-acumiuatae, subiutcgrae, 

 luteae, laxe reticulatao, antheridia numcrosa et parapliyscs 

 numerosas subclavatas in axillis ferentcs. Caetera ignota. 



Patria. Oregon: Astoria, in terra argillusa (n. 27G). 



Species perigouiis discoideis, foliis angustis, serratis et 

 bracteis perigonii longissimis insignis. 



P, commutata (Scliimp.) Lindb. 



Oregon: Mount Hood, c. fr. (lOGO, 1081). 



p. Ludwigii (Sch.). 



Oregon: MountHood, adrivulum glacialem, ster.(1053, 105G). 



P. gracilis (Scbleich.) Lindb. 



Oregon: Mount Hood, ster. (1080). 



P. an no tin a (L.) Lindb. 



Washington: Cascaden, Easton, c. fr. (976), EUensburgh, 



c. fr. (974), Enumclaw, c. fr. (386 — 88). Oregon: 

 Mt. Hood (1047). 



P. carnea (L.) Lindb. 



Dacota: ad fl. Missouri pr. Bismarck, c. fr. (1615). 



P 



P. nutans (Scbreb.) Lindb. 



Wyoming: Yellowstone National Park, c. fr. (1501, 1502, 



1504). Oregon: Mount Hood, c. fr. (1064, 1071, 

 1076, 1078). Washington: Cascaden, Easton, c. fr. 

 (629), Rigi ad Clealum Lake, c. fr. (910). Vancouver 



Island: Victoria, c. fr. (57). 



