LABIATAE 409 



1. H. SUAVEOLBNS (L.) Poir. Soob-cabayo (Tag.)- 



A coarse, erect, branched, more or l«es hairy, aromatic ajmual 6.5 to 2 

 m high. Leaves ovate, acute, serrulate, 4 tfi 9 cm long, variable. Flowers 

 in axillary, peduncled, 3- to 4-flowered heads or clusters, some solitai^y 

 ones usually added, racemosely or subpaniculately disposed along the 

 branches. Calyx in flower about 4 mm long, soon enlarged and nearly 1 

 cm long, striate, villous, the teeth erect, subulate. Corolla blue, about 8 

 mm long, limb 6 mm in diameter. 



In waste places, very abundant, fl. all the year. A native of tropical 

 America, now found throughout the Philippines, and in some parts of 

 India and Malaya. 



2. R. BREViPES Poir. 



An erect, branched, somewhat hairy, annual herb 0.6 to 1.5 m high. 

 Leaves oblong-ovate to oblong-lanceolate, acute or acuminate, serrate, 3 

 to 7 cm long. Heads globose, axillary, solitary, 1 to 1.3 cm in diameter, 

 the peduncles as long as the heads or shortet. Flowers very numerous, 

 calyx and bracts green, the teeth erect, subulate, corolla slightly exserted, 

 white. (Fl. Filip. pi. SOi.) 



In open, usually damp or wet waste places and grass lands, fl. Oct.-Feb. ; 

 common and widely distributed in the Philippines, A native of tropical 

 America, now naturalized in Malaya, tropical Africa, etc. 



3. H. CAPiTATA Jacq. 



A stout, erect, non-aromatic, annual herb 0.5 to 1.5 m high, more, or 

 less hairy, the stem green or purplish, 4-angled. Leaves lanceolate, tooth- 

 ed, 8 to 14 cm long. Flowers numerous, crowded in long-peduncled, axillary, 

 solitary, globose heads, the peduncles up to 10 cm in length, the heads 

 1 to 2 cni in diameter, with a basal involucre of hairy bracts. Calyx green, 

 4 mm long, accrescent and 8 mm long in fruit. Corolla white, 6 mm long. 

 (Fl. Filip. pi. S9i.) 



In open waste places, fl. Oct.-Feb.; common and widely distributed in 

 the Philippines. A native of tropical America, not as yet reported from any 

 other part of the Orient. 



4. H. SPiciGERA Lam. 



An erect, branched, nearly glabrous or slightly pubescent annual herb 

 1 to 1.5 m l>igh, the stems 4-angled, scabrous. Leaves petioled, lanceolate 

 to oblong-lanceolate, acuminate, serrate, 2 to 6 cm long, the base acuminate- 

 decurrent. Spikes oblong to ovoid, dense, terminating the branches, 2 to 

 6 cm long, many-flowered. Flowers purplish, 3 to 4 mm long. Calyx ac- 

 crescent, and about 6 mm long in fruit, ribbed, reticulate, the teeth subulate. 



In open dry grass lands near Fort McKinley, fl. Oct.-Jan.; widely dis- 

 tributed in the Philippines. A native of tropical America. 



5. COLE US Loureiro. 



Erect or spreading herbs or undershriibs, sometimes aromatic, often with 

 variegated leaves. Leaves petioled, ovate, toothed. Flowers blue or pur- 

 ple, in lax, few- to many-flowered cymes (whorls) which are arranged in 

 simple or panicled racemes. Calyx 5-toothed, 2-lipped, enlarged in fruit. 

 Corolla exserted, decurved, the limb prominently 2-lipped, the lower lip 

 much larger than the upper one, boat-shaped. Stamens declinate, the 

 filaments united below into a sheath surrounding the style. (Greek 

 "sheath," from the united filaments.) 



