78 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



2. Puccinellia phryganodes (Trin.) 



Poa phryganodes Trin. Mem. Acad. St. Petersb. VI. Math. Phys. Nat. 1: 389. 1830. 



Catabrosa vilfoidea Anderss. Of v. Vet. Akad. Forh. 19: 254. 1862. 



Glyceria vilfoidea Fries, Ofv. Vet. Akad. Forh. 26: 139. 1869. 



A densely cespitose, glabrous, prostrate perennial with numerous, very short leave? 



1 to 2 cm. long and creeping, geniculate culms 1.5 cm. long or less, the flowering 

 culms about 5 cm. high, with a small, few-flowered contracted panicle 1 to 2 cm. in 

 length; sheaths overlapping; spikelets 3 to 5 mm. long, few-dowered; lemmas 2.5 

 to 3 mm. long. 



On saline sands and mud flats, Seward Peninsula and Pribilof; also in Spitzbergen. 



Specimens examined Port Clarence, wet sand flats, Walpole 633, 1718; St. Paul 

 Island, Macoun 16223 (sterile specimens). 



A very distinct species, recognized at once by its prostrate habit. Specimens from 

 Fries labeled Glyceria vilfoidea, collected in Spitzbergen in 1868, are apparently 

 identical with our species, which is certainly Poa phryganodes Trin. 



3. Puccinellia alaskana sp. no v. 



A densely cespitose glabrous perennial 10 to 20 cm. high, with numerous rather 

 soft, short, plane, glabrous leaves and small, contracted, densely flowered panicles 



2 to 4 cm. long; sheaths overlapping, the upper one somewhat inflated; ligule about 

 2 mm. long; leaf blades linear, 1 to 2 mm. wide, 3 to 6 cm. long; panicles pale or 

 purplish, the branches glabrous, appressed, rarely spreading, naked below, flower- 

 bearing above; spikelets 4 to 6 mm. long, 3 to 5-flowered; glumes unequal, the first 



1 mm. long, acute, the second 2 mm. long, 3-nerved, obtuse; lemmas about 2.5 mm. 

 long, rather prominently 5-nerved and appressed-ciliate on the nerves below; palea 

 equaling the lemma, the keels glabrous. 



Type U. S. National Herbarium no. 592343, collected August 4, 1891, on St. Paul 

 Island, Bering Sea, by C. Hart Merriam. 



Seward Peninsula, islands of Bering Sea, and Fribilof Islands. 



Specimens examined: Port Clarence, tundra bank, Walpole 1015; St. Paul Island, 

 Merriam in 1891, Macoun in 1892, Trelease &■ Saunders 2690; St. Matthew Island. 

 Cole in 1899. 



A species related to Puccinellia vahliana ( I.iebm.). (Poai ahliana Liebm. «); Glyceria 

 vahliana Fries), but distinguished by its much smaller glumes, less pubescent and 

 much smaller lemmas, larger size, and flat, more flaccid leaves. From Puccinellia 

 angustata it is at once distinguished by the appressed-ciliate and rather prominent 

 nerves of the lemmas. 



4. Puccinellia tenuiflora (Griseb.) 



Alropis tenuiflora Griseb. in Ledeb. Fl. Ross. 4: 369. 1853. 

 Glyceria distans tenuiflora Turcz. loc. cit. as synonym. 



An erect glabrous perennial 40 to 60 cm. high with linear leaves, usually effuse 

 panicles and small spikelets; ligule 2 to 3 mm. long; leaf blades 6 to 9 cm. long, 1 to 



2 mm. wide, usually involute; panicles 10 to 15 cm. long, the branches scabrous, 

 capillary, spreading or ascending, few-flowered, the lower ones somewhat fasciculate, 

 often 10 cm. long; spikelets 3 to 4 mm. long, 3 or 4-flowered; lemmas glabrous, 2 mm. 

 long, the nerves very faint or wanting. 



Upper Yukon and Saskatchewan; also in northern Asia. 

 Sfecimen examined: Fort Yukon, Bates in 1889. 



A distinct species, at once recognized by its effuse, almost capillary panicles and 

 small lemmas. 



5. Puccinellia maritima (Huds.) Pari. Fl. Ital. 1: 370. 1848. 

 Poa maritima Huds. Fl. Angl. 35. 1762. 



a Fl. Dan. 14: pi. 2401. 1845. 



