80 UNITED STATES AND MEXICAN BOUNDARY. 



turgid, not compressed. This is surely a congener of L. vulgaris; and no less so, perhaps, of 

 Ericameria resinosa^ Nutt.j the ligules of which are often imperfect. In two directions, species 

 which I cannot separate from Linosyris make too close an approach to Aplopappus. — {Vide PL 

 Wright, I, p, 96, & 2, p. 81.) 



LiNOSYRis (Cpirysothamnus) viscidiflora, Jb?T. & Gray; var, paniculata. California ; ScJiott. 

 The locality not recorded. This, with a Californian specimen gathered on the Sacramento in 

 Wilkes' Exploring Expedition, perhaps helongs to an undescribed species ; but the distinctions 

 between it and L. viscidiflora; (a bad name^) on the one hand, and Ericameria resinosa, NutL, 

 on the other, are not clear. Better specimens of these plants are needed for illustration. 



LiNOSYRis GRAVEOLENS, ToTT. & Gratfj I. c. ' Cobre, New Mexico ; Bigeloiv. Sierra de los 



Animos ; Wright. 



LiNOSYRis PULCHELLA^ Gray^ PI. Wright J 1,^. 96, & 2, jp. 80, Sandy banks of the Rio G-rande, 

 New Mexico ; Wright^ Pigeloto. Sand hills, Chihuahua ; October ; Thtirber. 



LiNosYRis Wrightii, Gray^ PL Wright^ 1, p. 95, d: 2, p. 80. Along the Rio Grande, New 

 Mexico, etc. ; Wright^ Bigeloiv. As already remarked^ some forms appear to connect L, hirtella 



Grande 



with this species. 



LiNOSYRis CORONOPIFOLIA, Gi^ay, PL Wright J l,p. 96. Lower Rio 

 Moros, etc. ; Schott, Parry ^ Bigeloia. 



LiNOSYRis? CARNOSA, Gray^ PL Wright^ 2, p. 80. Subsaline soil west of the Chiricahui 

 mountains ; Wright. Gathered by Mr. Wright ; the affinities of the plant still doubtful. 



LiNOSYRis (Aplodiscus) Drummondii^ Torr, <t- Gray^ FL 2, p. 233. Prairies between Indianola 

 and San Antonio, Texas ; Parry, On the lower Rio Grande ; Schott. 



LiNOSYRis (Aplodiscus) Mexicana, Schleccht, Hort. HaL p. 7, t. 4. Aplopappus (Aplodiscus) 

 discoideus, DC. Lower Rio Grande? Schott^ who also gathered a var. tomentosa : pube laxa 

 decidua lanata. The particular locality not recorded. 



LiNOSYRis (Aplodiscus) Menziesii, Gray^ PL Wright, 1, p. 97. Aplopappus Menziesii, Torr. 

 & Gray. San Luis Rey, San Diego, Carisso creek, &c. ; Parry, Schott, &c. Common in dry 



places, growing in bunches. Dr. Hulse gathered in the valley of the Sacramento a scabrous 



variety of this, with the lower leaves large and obovate. 



Aplopappus (Ericameria) ericoides, Hook, dt Am. Bot. Beech, p. 146. California ; Schott. 

 Aplopappus (Ericameria) laricifolius, Gray, PL Wright, 2, p. 80. Guadalupe Pass, New 



Mexico; Wright. Organ mountains ; Bigelow. 



Aplopappus phyllocephalus, DU. Prodr. 5, p. 347. A. rubiginosus^ Torr. dt Gray, L c. 

 Lower Rio Grande ; Schott. The npecies was founded on Berlandier's No. 2278, which is a 



No 



to blossom, and with nearly sessile heads. 



Aplopappus spinulosus, DO. L c. Everywhere common along streams, from Texas to Sonora. 

 Aplopappus gracilis. Gray, PL FendL p. 76. Common through New Mexico and Sonora in 

 sandy places. 



Aplopappus (Prionopsis) ciliatus, DO. Prodr. 5, p. 346. Plains and alluvial banks of rivers, 



western and southern Texas ; Bigelow, Schott. 



Xanthisma Texanum, DC. Prodr. 5^ p. 94; var. Berlandieri, Gray, PL Wright, 1, p. 98. 



On the lower Bio Grande ; Schott. This is the form^ with very obtuse involucral scales, on 



which the genus was founded, viz : Berlandier's No. 2039, misprinted 2639, gathered near 



