2 POLYGONACEAE 



upper leaves entire or slightly toothed ; involucre 2-lobed, 2-3 mm. long in fruit, laciniate-toothed ; 

 sepals usually 6, lanceolate, acute, less than 1 mm. long. 



Open or shaded slopes, mainly Upper Sonoran Zone; northern California to Lower California, southern Utah, 

 and Arizona. Type locality: Bodega Bay, California. March-July. 



2. GILMANIA Coville, Journ. Wash. Acad. 26: 210. 1936. 



Small prostrate annual with yellowish herbage. Basal leaves petioled, 3-nerved; the 

 cauline 3 at the nodes, and the uppermost sessile. Flowers in fascicles of 5-6 at the nodes, 

 without involucres or bracts, through the shortening of the internodes, the uppermost 

 fascicles becoming congested into leafy-bracted terminal glomerules. Pedicels jointed at 

 the base. Calyx 6-parted, yellow. Stamens 9; filaments filiform. Styles 3, deciduous. 

 Achene triangular; embryo nearly straight; cotyledons orbicular. [Name in honor of 

 M. French Gilman, who rediscovered the species.] 



A monotypic genus of the Mojave Desert, California. 



1. Gilmania luteola Coville. Gilmania or Golden Carpet. Fig. 1301. 



Phyllogonum luteolum Coville, Contr. U.S. Nat. Herb. 4: 190. 1893. 

 Eriogonum luteolum M. E. Jones, Contr. West Bot. No. 11: IS. 1903. 

 Gilmania luteola Coville, Journ. Wash. Acad. 26: 210. 1936. 



Stems prostrate, branching, S— 15 cm. long, the nodes often giving rise to several branches, 

 thinly pilose above. Basal leaves and the lower cauline obovate or broadly oblong, 10-15 mm. 

 long, obtuse at apex, narrowed at base to a petiole of about equal length ; upper leaves smaller 

 and short-petioled or the uppermost sessile; pedicels 2-5 mm. long; sepals 1.5-2 mm. long, 

 oblong-linear, the inner 3 becoming a little longer in fruit; achene buff -colored, smooth and 

 shining, ellipsoid, 1.5 mm. long. 



A local species of the Death Valley region, California. Type locality: Furnace Creek Canyon, Funeral Moun- 

 tains. March-April. 



3. NEMACAULIS Nutt. Journ. Acad. Phila. II. 1 : 168. 1847. 



Slender diffusely branching annuals, with mostly basal exstipulate leaves. Flowers 

 perfect, capitate, each with a free herbaceous bract, the heads sessile at the nodes. Calyx 

 6-cleft, colored, enclosing the achene. Stamens 3. Styles 3; stigmas capitate. Achene 

 short-ovoid, obscurely 3-angled. [Name Greek, meaning thread and stems, in reference to 

 the very slender branches.] 



A monotypic Californian genus. 



1. Nemacaulis denudata Nutt. Nemacaulis or Woolly-heads. Fig. 1302. 



Nemacaulis denudata Nutt. Journ. Acad. Phila. II. 1: 168. 1847. 

 Nemacaulis folio sa Nutt. Journ. Acad. Phila. II. 1: 168. 1847. 

 Nemacaulis Nuttallii Benth. in DC. Prod. 14: 23. 1857. 



Stems branching from the base, prostrate or usually ascending, 4-35 cm. long, glabrate. Basal 

 leaves spatulate, 1.5-5 cm. long, including the short petiole, densely woolly-tomentose on both 

 surfaces ; stem leaves, except at the lowermost nodes, reduced to bracts ; bractlets of the flower 

 clusters obovate-spatulate, 2 mm. long, the outer flowerless, the inner smaller, woolly within and 

 glabrous without; calyx yellow, glabrous, about 1 mm. long, short-pedicelled. 



Sandy soils, Sonoran Zones; along the coast from Los Angeles County, California, to San Jorge, Lower Cali- 

 fornia, also on the western border of the Colorado Desert, California. Type locality: San Diego, California. 

 April-Sept. 



4. HOLLISTERIA S. Wats. Proc. Amer. Acad. 14: 296. 1879. 



Diffusely branched prostrate floccose-tomentose annual, leafy throughout. Stem leaves 

 cuspidate, solitary at the nodes but usually with small cuspidate stipules. Involucres soli- 

 tary and sessile in the axils, composed of 3 slightly united acicular bracts, 2-flowered. 

 Calyx turbinate, membranous, 6-cleft to below the middle. Stamens 6-9, included. Style 

 divided to the base, the lobes recurved. Achenes ovoid, abruptly contracted to a 3-angled 

 beak, longer than the body, shining. Embryo curved; cotyledons accumbent, orbicular. 

 [Name in honor of Col. W. H. Hollister, pioneer Californian.] 



A monotypic Californian genus. 



1. Hollisteria lanata S. Wats. Hollisteria. Fig. 1303. 



Hollisteria lanata S. Wats. Proc. Amer. Acad. 14: 296. 1879. 

 Chorizanthe floccosa M. E. Jones, Contr. West. Bot. No. 12: 74. 1908. 



Prostrate annual, lanate throughout, the main branches 5-20 cm. long. Basal and lowest stem 

 leaves oblanceolate, narrowed at base to the petiole, acute at apex, 25-35 cm. long; stem leaves 

 ovate, sessile, 7-15 mm. long, cuspidate ; calyx-lobes rotate-spreading in anthesis, about 2 mm. 

 long, greenish yellow, densely woolly on the outer surface, the outer broadly scarious-margined, 



