STANDLEY TREES AND SHEUBS OF MEXICO. 1243 



4. Valerianoides nelsonii (Robins. & Greenm.) Standi. 

 Stachytarpheta nelsonii Robins. & Greenm. Amer. Journ. Sci. 50: 162. 1895. 

 Type collected above Dominguillo, Oaxaca. 



Shrub, the branchlets densely hirtellous ; leaves ovate, 2.5 to 4 cm. long, 

 acute, coarsely serrate-dentate, tomentose beneath; sp'kes 5 to 10 cm. long: 

 calyx 8 mm. long; corolla purple. 



Probably only a form of V. aciwiinatum. 



5. Valerianoides jamaicense (L.) Medic. Phil. Bot. 1: 178. 1789. 

 Verbena jamaiccnsis L. Sp. PI. 19. 1753. 

 StacJiytarphetn jamaiccnsis Vahl, Enum. PI. 1: 206. 1804. 



Guerrero to Veracruz and Yucatan. Widely distributed in the tropics of 

 both hemispheres. 



Plants essentially annual but sometimes suffrutescent, glabrous or nearly 

 so ; leaves petiolate, oblong to ovate, 2 to 8 cm. long, coarsely serrate-dentate ; 

 spikes 15 to 50 cm. long; corolla 8 to 11 mm. long. "Verbena azul " (Nica- 

 ragua ) . 



The plant is a common tropical weed. It is said to have emetic, cathartic, 

 anthelmintic, and emmenagogue properties, and is used in various localities 

 as a remedy for intestinal worms, venereal diseases, ulcers, erysipelas, yellow 

 fever, dropsy, and stomach affections. It has been reported to be poisonous 

 to sheep. In Brazil the leaves have been employed for adulterating tea, and 

 the dried leaves are said to have been exported to Europe under the name 

 " Brazilian tea." 



6. Valerianoides mutabile (Jacq.) Kuntze, Rev. Gen. PI. 2: 510. 1891. 

 Verbena mutabilis Jacq. Icon. Rar. pi. 201. 1786. 

 Stachytarpheta mutabilis Vahl, Enum. PL 1: 209. 1805. 

 Stacliytarpheta purpurea Greenm. Field Mus. Bot. 2: 258. 1907. 



Sinaloa to Guerrero, Veracruz, and Yucatan. Widely distributed in tropical 

 regions. 



Plants chiefly herbaceous but often suffrutescent ; leaves broadly ovate to 

 oblong-ovate or spatulate-ovate, 3 to 10 cm. long rounded to acuminate at apex, 

 abruptly contracted below and decurrent, scaberulous, pubescent, or hirsute ; 

 spikes 10 to 30 cm. long or more, stout, pubescent ; corolla 12 to 15 mm. 

 long. "Verbena rosada " (Nicaragua) ; " rabo de zorro " (Colombia) ; "cola 

 de alacran," "verbena" (El Salvador). 



Stachytarpheta purpurea is a hirsute form. 



7. LIPPIA L. Sp. PI. 633. 1753. 



Shrubs or small trees, sometimes herbs ; leaves opposite or teruate. entire, 

 toothed, or lobed ; flowers capitate or spicate, small, bracteate ; calyx small, 

 ovoid, campanulate, or compressed, 2 or 4-dentate ; corolla tube cylindric, the 

 limb oblique, somewhat bilabiate, 4 or 5-lobate ; stamens 4 ; fruit dry, 2-celled, 

 included in the calj'x. 



Several herbaceous species occur in Mexico. The name " tehuacjlu " is said 

 to be applied to some species of the genus in Tabasco and Yucatdn. 



Flowers in slender, elongate, more or less interrupted spikes. 



Leaves entire 1. L. ligustrina. 



Leaves crenate. 



Flowers 3 mm. long 2. L. wrightii. 



Flowers 5 to 6 mm. long 3. L. niacrostacliya. 



