DISTRIBUTION OF ADENOSTEGIA 419 
cate, pink with purplish tip; stamens two or four, the upper, when 
present, imperfect, the lower with dilated filaments. 
Key to species of § Chloropyron. 
Stamens two. 
Mracts densely’ villous-hiroute oy oes oe fs hh ee ae 18. A. mollis. 
acts eoatsely hirsitte.. 0 Cl oie ee 19. A. palmata. 
Stamens four. 
Herbage canescent, bracts lanceolate...........000ee sees 20. A. canescens, 
Herbage glaucous, bracts generally three-toothed........... 2%. A. marilima. 
18. ADENOSTEGIA MOLLIS (Gray) Greene 
Cordylanthus mollis Gray, Proc. Am. Acad. 7: 384. 1868; Wats. 
Bot. King’s Exped. 460; Gray, Bot. Calif. 1: 582; Gray, Syn. 
Fl. 2!: 304; Jepson, Fl. W. Mid. Calif. ed. 2. 287. 
Adenostegia mollis Greene, Pittonia 2: 181. 1891; Kuntze, Rev. 
Gen. 2: 457; Wettstein in Engler & Prantl, Nat. Pflanzenfam. 
4°: 98; Jepson, Fl. W. Mid. Calif. 417. 
Chloropyron molle Heller, Muhlenbergia 3: 133. 1907. 
Simple or divaricately branching annual, 3-4 dm. high with 
sparsely hirsute stems; leaves 5-7 mm. long, the lower entire, the 
upper incised, pubescence dense villous-hirsute; spike 3-10 cm. 
long, dense, and drooping; floral bracts 18-22 mm. long, villous- 
hirsute with long, spreading hairs, shallowly five- to eight-parted 
into finger-like divisions, the middle division exceeding the others, 
three-nerved; calyx-leaf 17-18 mm. long, four- or five-nerved, 
with two, sometimes three, erect teeth, completely hidden by the 
wide floral bract, lower part nearly glabrous, upper villous-hirsute; 
corolla 15~16 mm. long, the tube longer than the throat; stamens 
two, the upper pair lacking; capsule 7-9 mm. long, rounded; 
seeds 2-5 mm. long, deeply reticulate. [PLATE 10, FIG. 19. 
Type Locatity: “Mare Island, Bay of San Francisco, Charles 
Wright, in N. Pacif. Expl. Expedition, November, 1855.” 
Distripution: A very local species, found only along the 
northern side of San Francisco Bay from Suisun to San Rafael. 
SPECIMENS EXAMINED:— CALIFORNIA: Vallejo, July, 1883, 
Congdon; salt marshes near San Rafael and Petaluma, Davy 4063; 
Suisun Marshes near Suisun, Heller 7551; Suisun Marshes, 1892, 
Jepson; Mare Island, 1855, bees (co-type). 
