OP ARTS AND SCIENCES. 17 



adjacent parts of New Mexico and Colorado. It has been confounded 

 sometimes with T. jilifoUum, sometimes with T. siihsimpUcifolium. 

 From the former it is distinguished by a more rigid habit, coarser and 

 less dissected foliage, and by being truly perennial, spreading by 

 creeping rootstocks. The latter goes into a section containing also 

 T. subnudum and T. longipes, well characterized by short corolla-lobes 

 and a rudimentary or obsolete pappus. 



Madi 



lecB. 



Hemizonia panicul ATA. H. jiorihundce sat affinis ; caule inferne 

 hirsuto ; foliis caulinis plerisque pinnatifidis, ramealibus integerrimis 

 linearibus parvis ; capitulis laxe paniculatis ramulos bracteolatos ter- 

 minantibus ; ligulis 8 ; bracteis receptaculi aut fere discretis aut ultra 

 medium connatis ; floribus disci 10-12 ; acheniis radii scrobiculato- 

 pauci-rugosis, rostro brevi arrecto ; disci baud raro fertilibus pappo 

 8-10-paleato, paleis subcoriaceis oblongis obtusis extus marginibusque 

 hirsutis tubo proprio corollas longioribus. — Santa Barbara to San 

 Diego Co., California, Brewer, Parish, Jared. Includes the plant of 

 coll. Brewer which was referred to H. angustifoUa var. Barclayi in 

 the Botany of California. 



Hemizonia Wrightii. Proecedenti affinis, inter H. Kelloggii, 

 Greene, et H. fascicidatam collocanda, aut erecta 1-3-pedalis ramis 

 patentissimis, aut decumbens ramosissima ; foliis inferioribus laciniato- 

 pinnatifidis hirsutis, ramulinis parvis cum pedunculis bracteisque invo- 

 lucri ovato-lanceolatis ; floribus radii sa;pius 5, ligulis lato-cuneatis, 

 acheniis subtuberculato-rugosis brevi-rostellatis ; floribus disci 5-6 

 bracteis receptaculi pi. m. connatis circumdatis sterilibus, pappo e 

 paleis 8-9 oblongis sat robustis apice eroso-laciniatis. — California, 

 common in the vicinity of San Bernardino, first coll. by W. G. Wright, 

 then by the brothers Parish and by Parry, also as a waif near San 

 Francisco, Greene, probably conveyed by railway. 



Layta (Calliglossa) Douglasii, Hook. & Arn. Bot. Beech. 358. 

 This obscure species, so long known only from the single specimen 

 collected by Douglas near the Great Falls of the Columbia River, 

 has at length come to light in the collection of Marcus E. Jones, in 

 1882. He found it at Austin, Nevada. In aspect and in the white 

 rays it resembles a small form of L. glandulosa ; and it has a few small 

 stipitate glands on the involucre and the uppermost leaves. It is well 

 marked by the pappus, which consists of about 10 linear-subulate flat 

 awns, the margins of which toward the base bear a moderate number 

 of long and straight villous hairs. It is white ; the fulvous tinge in 



VOL. XIX. (n. S. XI.) 2 



