354 PROCEEDINGS OF THE AMERICAN ACADEMY 



i 

 fulvous rigid pappus, and glabrous striate-ribbed linear achenia as in 

 the species of this section. 



Aplopappus (PrRROCOMA) apargioides : caespitosus, humilis, 

 villosulus seu glaber ; caulibus floridis subscapiformibus e caudice 

 crasso folia pleraque radicalia rosulato-conferta linearia seu lanceolata 

 laciniato-pinnatifida superantibus mono - tricephalis ; involucre henai- 

 spha?rico multifloro, squarais 3 - 4-seriatim imbricatis sajpius obtusis 

 appressis ; ligulis 20 — 24 oblongis exsertis. — At Soda Springs, on the 

 Tuolumne River, alt. 9,700 feet, Bolander. Also, sparingly, Carson 

 City, Nevada, Dr. C. L. Anderson. Stems about a span high, slender, 

 naked above ; the leaves reduced to small linear bracts, simple or 

 divided into one or two peduncle-like branches. Radical leaves 2-5 

 inches long, in shape not unlike those of Leontodon autumnale, but 

 rigid. Head nearly half an inch in diameter, naked. Style, glabrous 

 striate achenia, and pappus of the section ; the later not very copious 

 nor rigid. One form has the stem slightly villous-pubescent and the 

 margins of the radical leaves sparingly hirsute-ciliate : the other form 

 is glabrous. 



Aplopappus (Ptrrocoma) paniculatus = Homopappus panic- 

 ulatus, Nutt., var. virgatus : capitulis numerosis minoribus. — Bridge- 

 port, on the eastern side of the Sierra, in alkaline soil, Bolander. Dr. 

 Anderson collected it at Carson City, Nevada, equally with slightly 

 hairy ovaries ; but the heads larger, nearly as in Nuttall's plant. 



Aplopappus (Ericameria) Bloomeri (Gray, supra, 6, p. 541), 

 var. angustatus : foliis angustissime linearibus ; capitulis racemosis 

 pier unique 10 - 12-floris, ligulis 1-4 quandoque nullis. — On Mount 

 Shasta, alt. 6,000 feet, Prof. Brewer (1415) ; Little Yosemite Valley, 

 Empire Camp on the Yosemite Trail, and Soda Springs, alt. 9,700 feet, 

 Bolander. From an imperfect specimen it is probable that this was 

 also collected on the head-waters of the Sacramento in "Wilkes's Explor- 

 ing Expedition. It seems to be connected by gradations with the 

 ordinary form of A. Bloomeri. It is a shrub, one or two feet in height, 

 according to Mr. Bolander. 



Linosyris (Chrysothamnus) Bolaxderi: fruticosa, pedalis, sub- 

 viscosa ; ramis lana valde implexa dealbatis ; foliis spathulato-lineari- 

 bus seu oblanceolatis acutatis baud rigidis subtrinerviis ; capitulis pau- 

 cis pluribusve ad apicem ramorum corymboso-congestis bracteis 1-2 

 linearibus iisdem dimidio brevioribus stipatis ; involucro cylindraceo 

 7 - 11-floro, squamis 10 - 12 pauciseriatis lanceolato-linearibus attenu- 



