412 A FLORA OF MANILA 



9. LEUCAS B. Brown 



Glabrous or pubescent, aniiual or perennial, simple or branched, erect or 

 ascending herbs. Leaves narrow. Whorls axillary, usually distant. Cal- 

 yx 10-nerved, the mouth oblique, equally or unequally 6- to 10-toothed. 

 Corolla-tube included, annulate or not within, the upper lip short, erect, 

 concave, villous, the lower spreading 3-fid, the middle lobe very large. 

 Stamens 4, ascending; anthers conniving, cells divaricate, at length con- 

 fluent. Siyle subulate. Nutlets ovoid, triquetrous, obtuse. (Greek "white," 

 in reference to the white-pubescent baves of some species.) 



Species about 50 Africa, Asia, and Malaya, about 5 in the Philippines. 



Leaves linear to linear-lanceolate 1. L. lavendulifolia 



Leaves ovate 2. L. javanica 



1. L. liAVENDULiFOLlA Smith (I/, linifolia Spr.). 



An annual, erect, branched herb 40 to 80 cm high, more or less pubescent 

 with short hairs. Leaves linear to linear-lanceolate, 5 to 9 cm long, 8 

 to 13 mm wide, acuminate, base narrowed, somewhat toothed; petioles none 

 or short. Whorls axillary and terminal, many-flowered, the bracts few, 

 short. Calyx about 1 cm long, green, very oblique, sharply toothed. Corolla 

 white, 1.5 cm long, the central lobe of the lower lip obovate, truncate, 

 8 mm Wide. 



In open dry grass lands, waste places, etc., fl. all the year; throughout 

 the Philippines, but certainly not a native species. India to Mauritius 

 and Malaya. 



2. L. JAVANICA Benth. 



An erect or ascending, branched, pubescent herb 20 to 50 cm high. 

 Leaves ovate, 2 to & cm long, up to 4 cm in width, obtuse, base sub- 

 truncate or rounded, margins coarsely crenate. Flowers axillary, crowded, 

 10 to 50 in each verticil, the bracts linear-setaceous. Calyx green, pubes- 

 cent, 8 to 9 mm long, striate, with 10, slender, subequal, linear-subulate 

 teeth. Corolla white, 11 to 12 mm long, the upper lobe ciliate; the lower 

 3-lobed, glabrous. 



In thickets and open places opposite Fort McKinley, fl. Sept.-Jan.; 

 widely distributed in the Philippines, but probably not a native plant. 

 Java. 



10. LEONURUS Linnaeus 



Erect, branched, leafy herbs with lobed leaves. Flowers in axillary, 

 densely flowered, scattered whorls, or the upper ones closer, the bracts 

 subulate. Calyx 5-nerved, turbinate, the teeth 5, spreading, spine-like. 

 Corolla-tube naked within, the upper lip entire, erect, the lower 3-fid, the 

 middle lobe obcordate. Stamens 4. Nutlets 3-angled, truncate, smooth. 

 (From the Greek "lion" and "tail.") 



Species 10 in Kurope, Asia, and America, a single introduced one in 

 the Philipipnes. 



1. L. SIBIRICUS L. 



A rather coarse, erect, branched, usually somewhat pubescent, annual 

 herb 60 to 120 cm high. Leaves 5 to 10 cm long, pinnately or palmately 

 3- to many-parted, the lobes narrow, often incised, or the upper leaves 



