﻿62 PLANTJE FENDLERIAN.S. 



f297. Liatris squarrosa, Willd. Near Fort Leavenworth, &c. ; August. (332.) 

 |298. L. squarrosa, 6\ intermedia, Torr. fr Gray, Fl. 2. p. 68. Prairies on the 

 Arkansas below Turkey Creek ; September. (331.) 



1. PECTIS § HETEROPECTIS. Pappus coroniformis et 1 -4-aristatus, vel saltern fl. disci muticus ; 

 aristis serrulato-scabris. 



S P. fastigiata (sp. nov.) : erecta, glabra ; caule fastigiato-ramosissimo ; foliis marginibus revolutis lineari- 

 filiformibus mucronatis grosse glandulosis basi setis utrinque 2-3 instructs ; corymbis terminalibus confertis ; 

 pedicellis setaceo-bracteatis capitula subaequantibus ; involucri 20-flori squamis 8 linearibus subcomplicatis 

 apice obtusis uniglandulosis ; ligulis 6 - 8 oblongis conspicuis ; corollis disci subregularibus ; acheniis parce 

 hispidulis ; pappo coroniformi et in fl. radii discique exteriorum 1 - 2-aristatis, aristis corolla dimidio breviori- 

 bus basi vix dilatatis. — Dry hills near Austin, Texas, Mr. Charles Wright ; flowering in September. — A 

 pretty annual, from 4 to 6 inches high ; the fastigiate branches terminated by dense corymbs ; the flowers bright 

 golden-yellow ; rays two lines long. Leaves an inch or more in length, half a line wide. The plant bears some 

 resemblance to P. tenella, DC, and probably also to P. uniaristata, which must likewise belong to this section. 



»* P. filipes (Harv. §• Gray in PI. Coult. ined.) : subglabra, erecta ; caule ramosissimo diffuso ; foliis 

 ancrusto-linearibus obtusis muticis marginibus revolutis scabris pauciglandulosis basi parce piliferis; pedunculis 

 capillaribus ebracteatis folia superantibus ; involucri 10-flori squamis 5 eglandulosis basi complicato-carinatis 

 apice dilatato-spathulatis obtusis; ligulis 5 obovatis ; corollis disci manifeste bilabiatis; acheniis parce puberu- 

 lis ; pappo radii biaristato, disci coroniformi rariusve uniaristato, aristis e basi subulata setiformibus sursum 

 scabris divergentibus. — California, Coulter (no. 329). — Plant of the size and aspect of P. linifolia. 



P. Coulteri (Harv. Sf Gray, I. c.) : puberula, diffuse ramosa ; foliis angusto-linearibus obtusis crebre et 

 grosse glandulosis marginibus revolutis basi setis brevibus dentibusve piliferis auctis ; pedunculis folia subsuper- 

 antibus capitulum 20-florum ada:quantibus ebracteatis ; squamis involucri 5 oblongis carinatis ; corollis disci 

 valde bilabiatis ; acheniis puberulis ; pappo radii 3- 4-, disci 2 - 3-aristato; aristis rigidis retrorsum serrulato- 

 hispidis. — California, Coulter (no. 330). — Leaves half an inch long. Heads solitary, half an inch long. 



P. mcltiseta, Benth., which also has retrorsely barbed awns, equally belongs to this section, which is 

 remarkable for the tendency to have a more reduced pappus in the disk than in the ray. 



2. PECTIS § PECTOTHRIX. Pappus e setis aristisve gracilibus basi vix dilatatis 6-20 (raro pauciori- 

 bus) serrulato-scabris vel barbellatis constans, conformis, aut fl. radii brevis auriculajformis. 



' p. papposa (Harv. Sf Gray, I. c.) : glabra; caule ramoso diffuso ; foliis angusto-linearibus gracilibus 



sparsim grosse-glandulosis basi utrinque 3 - 4-setiferis ; pedunculis 1 -3-bracteatis folia subsuperantibus ; capi- 

 tulis solitariis corymbosisve ; involucri circ. 20-flori squamis angusto-linearibus complicatis glandulis parce 

 punctatis obtusis; ligulis 6-8; corollis disci bilabiatis; acheniis uncinato-pubescentibus ; pappo fl. radii 

 dimidiato-auriculjeformi, disci e setis barbellatis 15-20 valde inacquajlongis. — California, Coulter (no. 331). 

 — Bristles of the disk-pappus slender, all alike, except in size ; the longest scarcely equalling the corolla, the 

 shortest one fourth of that length, all denticulate-barbellate, the barbellse spreading or upturned : pappus of the 

 ray composed of three more or less united, very short and obtuse scales. 



P. diffusa, Hook. ($- Am. (P. arenaria, Benth.), and P. elongata, Kunlh, belong to this section. 

 ' P. tenella, DC. (of which copious specimens were gathered by Dr. Gregg on the Rio Grande east of 

 Mier) connects this group with Pectis proper; the bristles of the pappus being somewhat enlarged toward the 

 base. Their number varies from three to five in the ray, and from three to six in the disk. 



