20 Stachytarpheta. 



stamens 2 fertile with anthers (the superior ones) and 2 

 sterile without anthers (the inferior ones), sometimes, sta- 

 minodes none; filaments short, included, inserted in the 

 upper part of the corolla-tube, anther-cells vertically diva- 

 ricate; style long, exsert, stigma capitate; ovary supported 

 by a short annular disc, 2-celled, 2-ovuled; fruff capsular, 

 separating into 2 one-seeded cocci; seeds exalbuminous. 

 Distribution: chiefly in tropical America, a few in 

 Africa, imported into tropical Asia and run wild there. 



1. a. Plant densely hairy; leaves ZVs— I2V2 by 4—672 cM.; 



petioles 2— 4V2 cM. ; pairs of nerves 6 — 8; calyx 1 — 1.2 

 cM.; corolla 2V2 cM., pink . . 1. S. mutabilis p. 20. 

 b. Plant subglabrous; leaves 3 — 10 by 1 — 5 cM.; petioles 

 1/2—31/2 cM.; calyx 0.6—0.75 cM.; corolla 0.7—1 cM., 

 blue 2. 



2. a. Crenatures of leaves mucronate; leaves 5—772 cM. long. 



2. S. bogoriensis p. 21. 

 b. Crenatures of leaves entire; leaves 3—10 by 1—5 cM. 3. 



3. a. Calyx 0.75 cM,; corolla-tube 0.75 cMi; leaves with 



acute or acuminate apex. . . 3. S. dichotoma p. 21. 



b. Calyx 0.6 cM.; corolla-tube 0.7- 1.2 cM.; leaves with 

 obtuse or subrounded, sometimes subacute apex. 



4. S. jamaicensis p. 22. 



1. S. mutabilis (/acq.) Vahl. Enum. I, 209, (1805); King 

 and Gamble, Journ. As. Soc. Beng. LXXIV, 4, 799; 

 Koorders, Exk. fl. v. Java III, 133; Bot. Mag. t. 976; 

 Miquel, Fl. Ind. bat., II, 907; Merrill Phil. Journ. Sci. 

 Bot. XI, 309; Backer, Ann. jard. bot. Buitzg. Suppl. 3, 

 I, 415; Hall f., Med.'s Rijks Herb. Leid. no. 37, 22 - 

 Verbena mutabilis facq. Coll. II, 334. — A herb, 

 reaching 1 M.; branchlets quadrangular, with spikes and 

 petioles densely tawny-pubescent; leaves opposite, ovate, 

 base rounded and decurrent, apex acute, the upper three- 

 fourths crenate, the crenatures mucronate, entire near the 

 base, sparsely villous and scabrid above, softly grey- 

 tomentose beneath, pairs of nerves 6—8, 7Vs— I2V2 by 



