206 POLEMONIACEAE 



scarious, 21/2 to 3 lines long; calyx-lobes villous within, % to % as long as the tube ; 

 corolla salverform, yellow, equaling or shorter than the calyx, 2V2 to 2% lines long, 

 its lobes about % as long as the tube and throat ; stamens unequally inserted low 

 on the tkroat and Y^ as long as the throat; cells of the ovary with 9 ovules; capsule 

 many-seeded, the seeds reuiform. 



Alkaline playas or flats or desert washes, 500 to 2400 feet : eastern Mohave Des- 

 ert. Mar. -Apr. 



Geog. note. — Linanthus arenicola is a singular endemic known from only five stations in the 

 eastern Mohave Desert as follows: Barstow, Ctirran; Scarles Lake, Mason 8232; Poison Canon, 

 west of Trona, Charlotte Smith 37 ; Kelso, Jones 999.5 ; Needles, ace. Jones. Its peculiarities and 

 apparent relationships seem so remarkable that further collections of this diminutive gilioid an- 

 nual are desirable. On some individuals the leaves are mostly palmately 3-parted, some being 

 2-parted, some entire. On other individuals, the leaves are mostly entire, some being palmately 

 3-parted. Or again, midway of the stem there may be a pair of leaves of which one leaf of the 

 pair is quite entire and the other 3-parted. The basal pair of leaves, or sometimes 2 or 3 pairs, 

 are at base connate-sheathing, the base or sheath being about % to V2 line long. Likewise, the 

 cotyledons are remarkably connate-tubular at base, the tube or sheath being 4 lines long. The 

 stamens are not only unequally inserted, but even in a small collection, it appears that no two 

 corollas show quite the same pattern of stamen insertion. 



Eefs. — Linanthus akenicola Jepson & Bailey. GUia arenicola Jones, Contrib. W. Bot. 13:2 

 (1910), type loc. Needles, Jones 10,447. L. mohavensis Mason, Madrono 4:158 (1938), type loc. 

 Searles Lake, 1 mi. 3. of Trona, ne. Mohave Desert, Maso7i 8232; also collected in Poison Caiion 

 (4 or 5 mi. s. of Trona), Mason 8294. 



11. L. lemmonii Greene. Stem diffusely branched from the base, spreading, 

 2 to 6 inches high, often forming a low rounded clump 4 to 12 inches broad ; herbage 

 puberulent or somewhat canescent ; leaf -blades palmately divided into 3 to 5 linear 

 lobes, 1 to 2 lines long, somewhat ciliate; flowers sessile or subsessile in terminal 

 head-like glomerules ; calyx puberulent or villous, equaling or a little exceeding the 

 corolla-throat, its lobes lanceolate, about as long as the calyx-tube; corolla funnel- 

 form, 2% to 3% lines long, dull or pale cream-white or yellowish with the deep 

 yellow throat often with red-purple markings, the tube about 1 line long and equal- 

 ing the broad throat, the lobes 1 to IV2 lines long; stamens exserted from corolla- 

 throat, the filaments inserted in upper part of throat; capsule oblong, the cells 

 many-seeded. 



Sandy fiats or sandy hillslopes and gTavelly mesas, 1000 to 5500 feet : inner 

 valleys and mountain slopes of cismontane Southern California from the San Ber- 

 nardino Valley to eastern San Diego Co. ; west side of tlie Colorado Desert. South 

 to Lower California. Apr. -June. 



Locs. — Cismontane S. Cal.: Lugonia, e. San Bernardino Valley, Parish; Banning, T. Bran- 

 degee; Strawberry Valley, Mt. San Jacinto, Jepson 1296; betw. Clialk Hill and Thomas Valley, 

 San .Jacinto Mts, Jepson 1324; Hemet Lake, Riverside Co., Clary 975; Elsinore, MeClatchie 36; 

 Oak Grove Valley, San Diego Co., Jepson. 17,148. Colorado Desert (west side) : Collins Valley, 

 ne. San Diego Co., Jepson 8840 ; San Felipe Valley, Jepson 8730 ; Box Caiion, Blair Valley, e. San 

 Diego Co., Jepson 8653 ; Vallecito, e. San Diego Co., Jepson 8913 ; Boulevard sta., e. San Diego 

 Co., W. I. Follett 34. 



Eefs. — Linanthus lemmonii Greene, Pitt. 2:257 (1892) ; Jepson, Man. 802 (1925). GUia 

 lemmonii Gray, Syn. Fl. 2:394 (1878), type loc. "S. E. California in San Bernardino Co.," Parry 

 4- Lemmon (that is, at Crafton, aec. to herb, label in Lemmon Herbarium. Crafton is in the San 

 Bernardino Valley, cismontane San Bernardino Co. The species docs not occur in the "Mohave 

 Desert" as stated in Synoptical Flora, ed. 2, 2:407). 



12. L. aureus Greene. Stem diffusely and usually widely branched, 1% to 7 

 inches high; herbage glabrate to puberulent, occasionally a little glandular; leaf- 

 blades palmately divided into 3 to 7 linear lobes, li'o to 3 lines long; flowers on 

 capillary pedicels in small paniculate cymes; calyx puberulent to glabrate, 2 to 21/; 

 lines long, its teeth I/3 to % as long as the tube, the tube villous inside ; corolla lemon- 

 yellow with a brownish or orange throat, funnelform, 4 to 7 lines long, the tube 

 whitish to dark purple, included in calyx, slightly shorter than the throat ; stamens 

 inserted in the sinuses or a little below; capsule ovoid, the cells many-seeded; seeds 

 small, showing spirieles when wetted. 



