129 



(B) PERENNIALS; STEMS C/ESPITOSE FROM A THICK, 



WOODY ROOT. 

 "" Maritime or allvaline flat species of the Pacific Coast. 



7. TiSSA MACROTHECA (Hornem.) Arenaria macrotheca, 

 Hornem. in Cham. & Schlecht, Linnaea, i. 53 (1826) ; Lepigomim 

 macrothecum, Fisch. & Meyer, Cat. Sem. Hort. Petrop. 1835). 



Leaves broadly linear, 2-3 mm. wide, 2-5 cm. long; stems 

 stout, ascending; plants dark green, entirely smooth or densely 

 glandular pubescent. 



Hab. Oak Bay, Vancouver Island (Macoun) and southward 

 to Southern California both maritime and inland, as on " alkaline 

 lands San Bernardino Valley, perennial, fleshy rooted, almost 

 tuberous," (Parish, 133 1). 



Var. SCARIOSA, n. var. Low, (2-10 cm.), glandular; leaves 

 broader, lanceolate-linear, crowded ; stipules very large and con- 

 spicuous, ovate-acuminate, nearly as long as the leaves. 



Hab. Near San Francisco (Torrey, No. 41) ; coast of Monte- 

 rey (Hooker and Gray, 1877) ; and Cypress Point, near Monterey, 

 on maritime rocks (Gray, 1885). 

 . 8. TiSSA PALLIDA, Greene, in litt. Leaves broadly linear, 

 ^ cm. long, smooth ; pedicels, calyx and upper portion of the 

 stem densely glandular pubescent, lower leaves and joints of the 

 stem smooth ; plants stout, very light colored, whence the name. 



Hab. Clayey bluffs overhanging the sea, prostrate, forming 

 dense tufts, near San Francisco, June, 1887 (Greene) ; Monterey ? 

 (Meehan in Herb. Phila.). 



9. TiSSA VILLOSA (Pers.), Britt, Bull. Torr. Club, xvi. 62. 

 Leaves filiform-linear, densely clustered in thelower axils, stems 



erect or ascending, slender, glandular pubescent; plant dark green. 

 Hab. In alkaline soil. Southern California, San Diego, (Cleve- 

 land, 526); alkaHne ground, San Jose (Mrs. A. E. Bush, 1879). 

 Also in western South America. The Californian plants differ 

 very slightly from Andean specimens in having smaller capsules, 

 but I have little hesitation in referring them to this species. 



* * Species of the mountainous regions of North Mexico. 



10. TiSSA Mexicana (Hemsl.) {Spergularia Mexicana, 

 Hemsl. Bot. Biol. Cen.-Amer.). 



Leaves hardly succulent, flowers "yellowish." 

 Hab. Near San Luis Potosi (Parry and Palmer). 



