72 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



origin is comparatively recent. It is worthy of note that a hirge pro- 

 portion of them are habitants of the higher granitic portions of the 

 mountains. The list is as follows : 



SPECIES CONFINED TO THE BLUE MOUNTAINS. 



AlUinn coUinuiu. 

 AUiuin iiiacrutii. 

 AUiuin III ad id II III. 

 AragaUiiK ciisickii. 

 Cala III agios t is ciisickii. 

 CastiUcja ciifiiekii. 

 Castillcja nibida. 

 CastiUcja nistica. 

 Draba cusickii. 

 Elyiiius nitidUH. 

 Eri^eron cfi rysopitidis. 

 Erif/erou iiirinbraiiaceus. 

 Eriogoiiuiii strict um. 

 Frascra nisickii. 

 La I) pill a fiispida. 

 Lathynis cusickii. 

 Lathyrus rigidiis. 

 Loiiiatiiim cusickii. 



Lomatium oreganum. 

 Lupin us cusickii. 

 Lupin us sabinei. 

 Lupiuus sulphureus. 

 Madia ramosa. 

 J'riitstcmon cusickii. 

 Pcntstcmon venustus. 

 Phaca cusickii. 

 Physaria oregana. 

 Potcntilla bicvifolia. 

 Primula cusickiaua. 

 Pterygia focniculacea. 

 Ptcryxia thapsoidcs. 

 Quamasia cusickii. 

 Ranunculus popnlago. 

 ficnvcio condrnsatus. 

 Sitanion latifoliuin. 

 Townscndia alpigcna. 



The Rocky Mountain element consists of a considerable number of 

 species, including some genera which otherwise do not occur in 

 Washington or Oregon. Most of these are confined to the higher 

 granitic peaks, very few occurring within Washington limits. The 

 presence of this Rocky Mountain element is undoubtedly a direct 

 result of immediate contiguity, though the species may have been 

 isolated on these remote peaks for a long period. It is noteworthy 

 that a number of the list reach the Sierra Nevada but not the Cas- 

 cades. The species are as follows : 



SPECIES THAT OCCUR ALSO IN THE ROCKIES BUT NOT IN THE CASCADES. 



Androsace septentrionalis. 

 Anemone parvifloru. 

 Arabis microphylla. 

 Aster elegatis. 

 Aster integrifolius. 

 Aster scopuloriim. 

 Carex hystricina. 

 Conioselinum scopuloriim. 

 Corallorhiza corallorhiza. 

 Draba alplna. 

 Draba glacialis. 

 Erigeron armeriaefollus. 

 Erigeron coulteri. 

 Eriogonum piper i. 



Eritrichium elongatum. 

 Oalium bifolium. 

 Hedysarum mackenzii. 

 Lepidium montanum. 

 Leucocrinmn uni bellatum. 

 Ligusticum tenuifolium. 

 Peraphyllum ramosissimum. 

 Phaca aboriginiim. 

 Phaca kentrophyta. 

 Polemonium, confertum. 

 Pinus flexilis. 

 Salix femaldil. 

 Senecio renifolius. 

 Thlaspi glauca. 



