POLEMONIACEAE (l>HLQX FAMILY) 403 



calyx; the broad lobes obovate, rounded at the apex, 4-6 mm. long: ovules 

 6-8 in each cell: capsule shorter than the calyx. — Wyoming to CaUfomia and 

 Washington. 



6. NAVARRETIA Ruiz and Pavon 



Glabrous or viscid-pubescent annuals. Leaves all alternate, pinnatifid, 

 setaceous or spinose. Flowers in crowded bracteate clusters terminating the 

 branches. Calyx-tube scarious between the five prominent green ribs pro- 

 longed into the unequal pungent lobes. Corolla tubular, funnelform, or salver- 

 form. Stamens and style either included or exserted, Capsule 1-^3-oelled, 

 1-many-seeded. — Under Gilia. 



Glandular-viscid 1. N. Breweri. 



Glabrous. ' 

 ' Stems erect, simple or branchied; corolla about 5 mm. long . . , 2. N. intertexta. 

 . ; Stems low, mostly divaricately branched at the base; corolla small, 

 .. less than 2 mm. long - . 3.'N. minima. 



, 1. Navarretia Breweri (Gray) Greene, Pitt. 1: 137. 1887. Erect or at 

 length much branched arid diffusely spreading, 3-12 cm. high, very minutely 

 glandular-puberulent all over: flowers somewhat glomerate: leaves with 

 mostly simple acicular-subulate divisions: calyx-lobes similar to these, nar- 

 rowly subulate, about equaling the yellow corolla, 6^8 mm. long, 3 or 4 -times 

 the length Of the tube: ovules 1 or 2 in each cell. — ^From^ Wyoming to Utah, 

 Nevada, and CaUfomia. 



2. Havarretia intertexta (Benth.) Hook. Fl. Bor. Am. 2: 75. 1838. Erect 

 or widely branched, low and rather stout, neither viscid nor glandular; stem 

 retrorsely pubescent: leaves mainly glabrous, with divaricate, acerose^ 

 spinescent divisions sparingly divided or simple: flowers densely glomek'ate: 

 tube of the calyx and base of the bracts strongly villous with white spreading 

 hairs; the lobesequaUng the white corolla, 6-8 mm. long: ovules and seeds 3 or 

 4 in each cell. — From the^ Rocky Mountains westward to California and Oregon. 



3. Navarretia minima Nutt. Journ. Acad. Phila. 1: 160. 1848. Depressed, 

 often forming broad tufts, 2-6 cm. high, glabrate: leaveS acicular and with 

 simpler and fewer divisions than the preceding: tube of- the calyx white-hairy 

 in the' broad sinuses, as long as the unequal lobes, which equal or exceed the 

 white corolla, 3 mm. long: ovules 1-3 in each cell. — rin very dry regions from 

 Dakota to Colorado and Oregon. ' 



6. POLEMONIUM t. 



Mostly perennial herbs, with alternate pinnate or plnnately parted leaves, 

 and blue or white or rarely purpUsh flowers, which are mostly terminal, either 

 Solitary, 2-3 together, or aggregated in capitate or paniculate cymes. Calyx 

 rotate-campanulate to tubular; Corolla funnelform to nearly rotate. Stamens 

 eqiially inserted; the filaments more or less declined and usually pilose- 

 apperidiged at base. Capsule oblong to globose. Seeds black or brown, ob- 

 long, often angled or even winged. 



Corolla campanulate; filaments pilos&'appendaged at base; leaf- 

 lets not verticillate. 

 Stems ,tall, leafy, soUtary. 

 ' Inflorescence narrow, usually densely thyrsoid. 



Plants from a slender rootstock; seed-coats imchanged if 



wetted . . . . . . . . . 1. P. occidentale. 



Plants from a lignescent caudex; aeed-coats becoming mu- 

 cilaginous if wetted 2. P. foliosissimum. 



' t ''Inflorescence broad and open. 



,. Stems and herbage pubescent 2. P. foliosissimum. 



Steitis and herbage glabrate 3. F. filiciniun. ' 



Stems low, several to many in tufts, sparsely leafy or only 



bracteate. i ; 



Seeds angled but not winged. 



Stems from a rootstock with a single or nearly simple crown 4. P. pulcherriwuin:' 

 ' ''' ' Stems from a lignescent freely branched caudex ... 5. P. Haydeniii, 

 / < J Seeds narrowly winged 6. P. pterospermum. 



