VERVAIN FAMILY 613 



dric 10-15 mm. long; bracts broadly ovate, abruptly apiculate, thinly strigose, margins mem- 

 branous and often purple-tinged; calyx 2-lobed, 2 mm. long, the lobes about equalmg the tube; 

 corolla pale blue or lavender, 2.5-3 mm. long, the tube little exceedmg the calyx, sparsely stri- 

 gose exteriorly at base of lobes, lower lip short ; fruit globose, 2 mm. long. 



Moist soils Sonoran Zones; Sacramento and San Joaquin Valleys and the cismontane valleys of southern 

 California, east to the Atlantic Coast. Type locality: "in Carolina, juxta amniculum Ashley. May-Sept. 



2. Phyla incisa Small, Narrow-leaved Fog-fruit. Fig. 4349. 



Phyla incisa Small, Fl. S.E.U.S. 1012, 1337. 1903. 



Lippia incisa Tidestrom, Proc. Biol. Soc. Wash. 48: 42. 1935. 



Stems branching at the base, spreading or creeping and often rooting at the nodes, simple 

 or usually branched. Leaves linear-cuneate, 1-3.5 cm. long, incisely 2-8-toothed above the middle, 

 strigillose-canescent, midvein evident, lateral vein none or very obscure ; peduncles 2-7 crn. long, 

 over twice as long as the leaves ; heads subglobose becoming cylindric and 1-2 cm. long in age ; 

 bracts rhomboidal, 2 mm. long, acute, strigillose; calyx barely 2 mm. long, strigillose; corolla 

 2.5-3 mm. long, white or bluish; lower lip with middle lobe a little larger than the lateral ones; 

 fruit broadly obovoid, 1.5-2 mm. long. 



Low moist ground, Lower Sonoran Zone; San Joaquin Valley and Imperial Valley, California; also in 

 Texas. Type locality: southern Texas. April-Oct. 



3. Phyla nodiflora var. rosea (D. Don) Moldenke. Garden Lippia. Fig. 4350. 



Zappania nodiflora var. rosea D. Don in Sweet, Brit. Flow. Card. IL 3: pi. 225. 1834. 

 Lippia filiformis Schrad. Ind. Sem. Hort. Gotting. 1834. 

 Phyla nodiflora var. rosea Moldenke, Phytologia 2: 22. 1941. 



Stems creeping forming mats, becoming suffrutescent, the young branches cinereous-strigil- 

 lose. Leaves pale green and more or less strigillose, narrowly oblanceolate to narrowly obovate, 

 acutish to broadly obtuse at apex, entire or usually with 1-3 pairs of minute teeth above the 

 middle, more or less acutely (not truly cuneate) narrowed below, 12-20 mm. long, including the 

 short slender petiole, lateral veins obscure or none; peduncles 1.5-3 cm. long; spikes ovoid, acute 

 at apex. 6 mm. thick ; bracts ovate, acute, often purple, thinly strigillose ; corolla 4-5 mm. long, 

 rose-colored, the lower lip about two-thirds the length of the tube. 



The commonly cultivated "Lippia" has become well established in many places in central and southern 

 California. Native of South America. May-Oct. 



Phyla nodiflora var. canescens (H. B. K.) Moldenke, Phytologia 1: 98. 1934. (Lippia canescens H. B. K. 

 Nov. Gen. & Sp. 2: 263. 1817.) Stems prostrate, the old branches woody and rooting, forming mats; leaves 

 opposite, often with smaller fascicled ones in the axils on short branchlets, linear-oblanceolate to spatulate- 

 cuneate,' 1-2 cm. long, acutish to rounded at apex, with 2-3 (rarely 4) pairs of minute teeth above, subsessile 

 or with a short winged petiole; spikes subspherical when young, narrowly cylindric in age, 4-5 mm. thick, 

 15-30 mm. long, rounded at apex; bracts broadly ovate to suborbicular, very obtuse at apex, margin often 

 erose; calyx 2 mm. long, lobes narrow; corolla purjile or white, 3 mm. long, lower lip scarcely half the length 

 of the tube. Low ground, San Joaquin and Imperial Valleys, California. Introduced in the Imperial Valley 

 and probably also in the San Joaquin. Type locality: Truxillo, Peru. 



Phyla nodiflora var. riptans (H. B. K.) Moldenke, Torreya 34: 9. 1934. (.Lippia reptans H. B. K. 

 Nov. Gen. & Sp. 2: 263. 1817.) Stems creeping, much-branched and rooting at the lower nodes, forming large 

 dense mats often 2 or 3 m. broad, herbage rather densely cinereous-strigillose; leaves mostly with short leafy 

 branchlets in the axils, the blades oval to obovatecuneate, 12-25 mm. long, acutish to obtuse at apex, rather 

 abruptly or cuneately narrowed to a short winged petiole, serrate with 4-5 pairs of approximate teeth, promi- 

 nently veined beneath; peduncles 2-6 cm. long; spikes ovoid or long-ovoid, 10-15 mm. long, about 6 mm. thick; 

 bracts ovate, acute, strigillose, the margins membranous and often rose-purple; corolla-tube well-exserted. Low 

 ground, Sonoran Zones; Sacramento Valley, California. Type locality: "Crescit locis siccis Provinciae Cuma- 

 nensis," Venezuela. 



3. ALOYSIA Ortega ex Pers. Syn. PI. 2: 139. 1807. 



Aromatic shrubs, with opposite, entire or toothed leaves. Flowers small, in slender 

 axillary loosely flowered spikes or racemes, each subtended by a small deciduous bract. 

 Calyx not flattened, the tube 4-angled, 4-lobed, the lobes subequal. Corolla 2-lipped, small, 

 commonly purple or white. Fruit separating into 2 thin-walled nutlets. [Named in honor 

 of Maria Louisa Theresa, wife of Charles IV of Spain.] 



A genus of about 30 species, inhabiting the warm temperate and tropical regions of the western hemi- 

 sphere. Type species. Verbena triphylla L'Her., the lemon verbena of gardens. 



1. Aloysia Wrightii (A. Gray) Heller. Vera Dulce or Wright's Aloysia. 



Fig. 4351. 



Lippia IVrightii A. Gray ex Torr. Bot. Mex. Bound. 126. 1859. 

 Aloysia IVrightii Heller, Muhlenbergia 1: 147. 1906. 



Shrub 6-15 dm. high, with slender opposite tomentose branchlets. Leaves 5-10 mm. long, 

 narrowly ovate to round-ovate, short-petioled, deeply and finely crenate, rugose, strigose above, 

 densely cinereous-tomentose beneath; bracts lanceolate, equaling the calyx; calyx 2.5 mm. long, 

 short-pedicelled, densely hirsute, lobes lanceolate about equaling the tube ; corolla white, 3 mm. 

 long, limb 2 mm. wide, lobes nearly equal ; nutlets oblong, barely 2 mm. long, the scar oblong, 

 extending almost to the apex, whitish. 



Rocky slopes. Lower Sonoran Zone; Clark Mountain and Providence Mountains, Mojave Desert, California, 

 to Arizona, New Mexico, and southwestern Texas; also northern Mexico from Sonora to Coahuila and Zaca- 

 tecas. Type locality: Texas. May. 



