BOTANY. 103 
Bigelow. The accessory nerves are wanting in the disk-corollas of Dr. Bigelow's specimens, 
and the rays are narrower and entire, not three-toothed as in Gregg’s. 
SENECIO MULTILOBATUS, Torr. Ё Gray, in Pl. Геп. р. 109. Monterey, California, May; Parry. 
SENECIO Coronopus, Nutt.; Torr. & Gray, Fl. 2, p. 437. San Luis Rey, February, on dry 
hill sides; Parry. 
Senecio TAMPICANUS, DC. Prodr. 6, p. 427. On the Limpio, Smith's Run, Rock Creek, White 
Rock Mountains, near the Rio Grande, etc.; Bigelow, Wright, Parry. 
SENECIO LOBATUS, Pers. Low banks or beds of rivers, from Laredo to Frontera and the Santa 
Maria in Chihuahua. 
SENECIO RIDDELLII, Torr. & Gray, Fl. 2, p. 444. On the Lower Rio Grande; Schott. 
SENECIO LONGILOBUS, Benth. Pl. Hartw. p. 18. Gravelly hills, Arroyas, etc., on the Rio 
Grande above Presidio, to Chihuahua and Sonora. In very various forms. 
SENECIO FILIFOLIUS, Nuit.; Torr. & Gray, l.c. Оп the Leona and Nueces, Texas. 
SENECIO AUREUS, Linn., var. BOREALIS, Torr. € Gray, l. c. Organ Mountains; Wright, etc. 
SENECIO CANUS, Hook., var. PYGMÆA, foliis angustissimis. Cobre, on mountains and hill sides ; 
Thurber, Bigelow. 
Senecio FASTIGIATCS, Nutt.; Gray, Pl. Wright. 2, p. 99. Cobre, Mimbres, etc., New Mexico ; 
Wright, Bigelow, etc. 
SENECIO PARRYI (sp. nov.): herbaceus, viscoso-pubescens; caule striato; ramis oligocephalis; 
foliis argute ingqualiter dentatis, caulinis spathulatis inferne longe attenuatis basi dilatata 
auriculato-amplexantibus, ramealibus summis lanceolatis; bracteis setaceo-subulatis ; capitulis 
breviter pedunculatis; involucri (semipollicari) paucibracteolati squamis acuminatis; ligulis 
12-15 ; acheniis sericeo-cinereis —In live-oak groves, 150 miles above the mouth of the Pecos, 
on the Mexican side of the Rio Grande, November; Parry. Root not seen. Stem, ete., slightly 
.floccose when young. Cauline leaves 2 inches or more in length. Ligules oblong, yellow, half 
an inch long. 
CacaLrA pECOMPOSITA, Gray, Pl. Wright. 2, p. 99. Mountains east of Santa Cruz, Sonora; 
Wright. 
CENTAUREA AMERICANA, Nutt. Sandy soil etc. from the Lower Rio Grande to Chihuahua. C. 
Mexicana, DO., is the same thing. 
CrRsruM Монти, Gray, Pl. Wright. 2, p. 101. Around springs, San Bernardino, New 
Mexico; Wright. Comanche springs; Bigelow. 
Crestum VIRGINIANUM, Michx. var. Low grounds, Escondido springs; Wright. Rio Grande; 
Schott, etc. 
Cirsium unpuLATUM, Nutt ; Gray, Pl. Wright. 1. с. W. Texas to the Limpio, and to Sonora, 
etc. In various forms, probably including C. ochrocentrum, Gray, Pl. Fendl. p. 110, Ё Pl., 
Wright, 2, p. 101. 
CrRsIUM Neo-Mexicanum, Gray, Pl. Wright. 2, p. 101. Organ mountains and Cobre, New 
Mexico; Wright, Bigelow. Cooke’s spring ; Thurber. 
Стватом Granamu, Gray, Pl. Wright. 2, p. 102. In swamps, between the Sonoita and San 
Pedro, Sonora; Wright, Thurber. 
Crrastum Counrert, Harv. Ё Gray, Pl. Fendl. р. 110? Monterey, California; Parry. 
Mogurnta HyroLeuca, DC. Prodr. T, р. 22. ‘Mountain pass, near Parras, Thurber. This is 
No. 1391 and 2358 of Berlandier’s collection, who records its vernacular name as ‘‘ Ocotillo.”’ 
Trixis FRUTESCENS, P. Browne; DC. Prodr. Т, p. 68; var. angustifolia, et foliis sericeo- 
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