POLEMONIAGEAB (I'HLOX FAMILY) 397 



the calyx, the lobes obovate, entire or somewhat erose, 7-8 mm. long: ovules 

 solitary in each cell. — Cimarron, Montrose county, Colorado. 



15. Phlox puberula (E. Nels.) 'A. Nels. Low, 1 din. high or less, stems erect 

 pi: ascending; more or less glandular-puberulent, very densely so on the ped- 

 icels and calyx, nearly destitute of'roughi$h hairs: leiaves' usually spreading, 

 linear, bluntish at tip or apiculate, 2-4 cm. long, 1-2.5 mm. wide: replication 

 of the calyx sinuses very slight and inconspicuous: corolla light blue or lillao, 

 tlie lobes obovate or putiealie-obovate, retuse or blunt, 7-12 mm. long: ovules 

 solitary in each cell. (P. longifolia puberula E. Nels. 1. c. 26.) — Prequrait in 

 western Wyoming and adjacent Utah and Idaho. Flowering much earlier 

 than P. longifaUa. - • ' ■ i ■ , 



16. Phlox gtansburyi (Torr.) Heller, Bull. Torr. Bot. Club 24: 478. 1897. 

 Stems several from a ligneous base, rather stout, usually simple below, cym- 

 osely brancihed above into leafy-bracted corymbs, about 1 dm. high; pubes- 

 cent throughout, roughly so above, the pedicels and calyx usually glandular: 

 leaves thick, usually recurved-spreading, linear or linear-lanceolate, apiculate, 

 20-35 mm. long, ^-3 mm.-wide: flowers on' pedicels 5-15 mm. long: calyx 1 cm. 

 long, the simlses more or less replicate, the teeth apiculate or somewhat 

 cuspidate-attenuate, as long as the tube: corolla pink or rose-color, the tube 

 fully twice the length of the calyx, the lobes, cuneate-obovate, erose, emar- 

 ginate or retuse, 7-8 mm. long: ovules usually one in each cell. (P; dasy- 

 pAyJ/o Brand, 1. c. 80. The type, Baker's No. 620^ seems to,l?e merely an 

 over-mature, hence ^abrous, specimen of this species.) — Colorado and New 

 Mexico and thence far westward. 



17. Phlox nana Nutt. PI. Gamb. 153. 1848. Herbaceous to the ground 

 or somewhat ligneous at base, 1-2 drd. high, stems freely branched; roughish- 

 pubescent throughout and more or less glandular: leaves spreading, opposite 

 below, alternate above, lance-linear, on the main stems 20-35 mm. lohg, 

 3-4 mm. wide, on' the lateral' branches shorter and narrower: flowers scat- 

 tered or somewhat corymbose, on pedicels 5-35 mm. long: calyx-teeth slightly 

 longer than the tube, green'^and apiculate: corolla "red" or "white," the 

 tube pubescent, somewhat j^jfceeding the calyx, the lobes broadly cuneate- 

 obovate, entire or with wavy inargins, often mucronate, about 15 mm. long: 

 ovules 2, or 3,m eaph cell. — Common in New Mexico, alsO; in Arizona. 



' .'iV '■ ; • 



1, GYMNOSTERIS Greene 



Dimiiiutive aiinuals'deypid of proper foliage, thfe cotyledons persisting on |he 

 otherwise naked stem. The oaipitate-congested inflorescence Subtended, by an 

 involucre of 4 or 5, leaves which are distinct and herbaceous above, but scari- 

 ous and united at base. Calyx vesicular and urceolate, thin-scaribus, only the 

 unequal teeth herbaceous. Corolla sal verform, with long and slender tube; 

 the somewhat dilated throat bearing the stamens, the whole marcescent- 

 persisffent, the dilated base of the tube still investing the thin, apparently 

 indehiscent capsule with its- ripe seeds. Seeds many, obliquely somewhat 

 cubical, the angles membranaceously margined or winged; testa thin, muci- 

 laginous when wetted, b,ut not developing spiracles. ; 



1a Gymnosteris riudiqaulis (H. & A.) Greene, Pitt. 3: 304. 1898, Very 

 glabrous, 3-10 cm. high'j. at length branehimg from the base: stem leafless from 

 the cotyledons up to the inflorescence, which' is a close head or glomerule 

 subtended by an involuijre of several entire^ bvaterlaiiceolate or lanceolate, 

 foliaceous bracts: corolla salverform, white, pmk, or yellow; the. tube 5-7 mm. 

 long and thrice the Wgth of the calyx: ovules 10-16 in each cell.— rSandy 

 streafit banks. > . V 



3. COLLOMIA Nutt. 



Herbs with 'alternate, mostly entire leaves. Calyx scarious below between 

 the angles, accrescent, obpyramidal or iiealrly cyathtfonn, not distended by 

 the capsule. Coiolla tubular-funnelform,;with open throat and a spreading 



