384 LABUTAE 



Low-lying "bottoms" and river banks, 5 to 900 feet : Great Valley ; Sierra Ne- 

 vada foothills; Mohave and Colorado deserts. South to Lower California and 

 Central America, east to South Carolina, Texas and West Indies. July-Nov. 



Locs. — Great Valley: Grimes (5 mi. s.) , Tales; Main Prairie, Solano Co., Jepson 21,237; Old 

 River, near Walnut Grove, Sacramento Co., Jepson 21,234; Brannaii Isl., Sacramento Co., Jepson 

 10,221 ; Mossdale School, lower San Joaquin River, Jepson 21,233 ; San Joaquin City, San Joaquin 

 Co., Jepson 10,281 ; Grayson, Stanislaus Co., Jepson 10,296 ; Tulare, Tulare Co., Pendleton 276. 

 Sierra Nevada foothills: Auburn, Placer Co., Ames; Kentucky House, South Fork Calaveras River, 

 Jepson 10,038. Mohave Desert: Piute Creek, near Piute Mts., A'. C. Wilson. Colorado Desert: 

 Rockwood, Parish 8336; Calexico, Parish 8332; Fort Yuma, Parish 8331. 



Refs. — LippiA NODITLORA Michx., PI. 2:15 (1803), "ad littora Carolinae et ad ripas fluminis 

 Ohio"; Jepson, Fi. W. Mid. Cal. 451 (1901), ed. 2, 352 (1911), Man. 859 (1925). Zapania nodi- 

 flora Lam., Encycl. Method. Bot. 8:839 (1808). Phyla nodiflora Greene, Pitt. 4:46 (1899). 



2. L. lanceolata Miehs. River Mat-gr.\ss. Stems trailing, 2 to 5 feet long ; 

 herbage hispidulose, greenish; leaf-blades ovate, % to 2% inches long, thinner than 

 in no. 1, pinuately straight-veined, sharply serrate except at the broadly cuneate 

 base which is abruptly narrowed to a short petiole ; peduncles longer than the leaves; 

 corolla bluish-white; fruit somewhat obovoid, the nutlets slightly corky-callus- 

 margined at the commissure. 



Moist soil of delta "bottoms" and river banks, 5 to 1200 feet : delta region of the 

 Great Valley ; coa.stal Southern California in and near the San Gabriel and San 

 Bernardino valleys. East to New Jersey, Florida and Texas, south to Mexico. 

 Aug.-Nov. 



Locs. — Great Valley: Andrus Isl., Sacramento Co., Jepson 21,239; Grand Isl., Sacramento 

 Co., Jepson 21,238; Lathrop, San Joaquin Co., Bioletti. Coastal S. Cal.: Ballona, Los Angeles 

 Co., Braunton 447; San Bernardino, Parish; Anaheim Creek, Orange Co., Booth 1238a; Laguna 

 Caiion, near Laguna Beach, D. L. Crawford. 



Refs. — LiPPlA LANCEOLATA Michx., Fl. 2:15 (1803), type loc. "in Carolina," Ashley ; Jepson, 

 Fl. W. Mid. Cal. 451 (1901), ed. 2, 352 (1911), Man. 860 (1925). Phyla lanceolata Greene, Pitt. 

 4:47 (1899). 



3. L. wrightii Gray. Branching shrub, 3 to 4 feet high, its branchlets puberu- 

 lent; leaf-blades ovate, creuulate, 2i'2 to 4 lines long, pubescence thin above, felt- 

 like beneath; petioles short (i/^ line) ; branchlets slender, the spikes borne in the 

 upper axils and thus paniculate; spikes dense, I/2 to IV2 inches long, shortly pe- 

 duncled; bracts ovate, shorter than the flowers; calyx 4-cleft, densely hirsute- 

 tufted ; corolla white, 1 line broad ; nutlets with the calyx-lobes persistent dorsally, 

 the commissure l-planed, rather densely whitish-scrobiculate. 



Limestone rocks, in caiions, 4000 to 5000 feet : eastern Mohave Desert. East to 

 Texas. Aug.-Oct. 



Locs. — Providence Mts., T. Brandegee; Pachalka Spr., Clark Mt., Wolf 7592. 

 Ref. — LiPPiA WRIGHTII Gray; Torr., Bot. Mex. Bound. 126 (1859), type loc. "along the Cibolo 

 of the Rio Grande," Bigelow. 



LABIATAE. Mint Family 



Herbs or low shrubs with squai'e stems and always opposite simple leaves. Herb- 

 age possessing a volatile oil, hence aromatic. Flowers perfect, solitary in the axils 

 or more commonly in small cjTues; cj^mes sessile in the axils of the opposite leaves 

 (rarely peduncled), commonly dense and having the appearance of a whorl, and 

 here so called for convenience. Subtending leaves of the whorls frequently bract- 

 like and the internodes short, the inflorescence thus becoming spike-like, or a single 

 whorl sometimes terminal and head-like. Calyx always synsepalous, frequently 

 2-lipped, usually .5-toothed. Corolla tubular, 2-lipped, commonly with 2 lobes in 

 the upper lip and 3 lobes in the lower lip ; or the lips sometimes subequal and the 

 lobes regular or nearly so. Stamens 4, inserted on tube of corolla, disposed in 2 

 pairs, or the upper pair of stamens wanting or represented by sterile filaments. 

 Ovary superior, 4-eelled, deeply 4-parted (or 4-lobed in Teucrium and Tricho- 



