616 cxn. LABIATE. (J. D. Hooker.) [Plectranthu*, 



8. PLECTRANTHUS, L'Herit. 



Herbs or undershrabs. Flowers usually small, in lax (rarely close) 

 panicled or racemed 6-8-fld. cymes (whorls). Calyx 5-tpothed, 2-lippel, 

 enlarged in fruit. Corolla-tube exserted, long or short, straight or decurved, 

 limb equal or gibbous or spurred, 2-lipped ; upper lip usually short, broad, 

 3-4-fid recurved ; lower much longer, entire, boat-shaped, narrow at tli 

 or stipitate. Stamens 4, declinate; filaments simple, free; anther-c .-11s 

 usually confluent. Disc usually produced in front, and there equalling or 

 exceeding the ovary. Style subequally-2-fid. Nutlets orbicular, ovoid or 

 oblong, smooth, granulate or punctate. Species about 80, Tropical and Sub- 

 tropical Asiatic, African, Australian and Polynesian. 



The species of the sections ISODON and COLEOIDES are numerous and very 

 difficult of discrimination, and the latter should perhaps be referred to Coleu*, or better 

 still refer all the Plectranthi to sections of Coleus, of which genus P. coleoides and 

 urticifolius have all the habit. 



Sect. 1. Zsodon. Fruiting calyx decurved, subequally 5-toothed, or 

 2-lipped, upper lip 3-toothed, lower 2-toothed. Nutlets oblong or rounded, 



obtuse. 



* Fruiting calyx broad, open, deeply 2-lipped, upper lip very broad with 

 3 distant spinous teeth, lower of 2 long subulate teeth. Corolla 1 ///. 

 tube straight, base equal. 



1. P. macranthus, Hook. f. ; sparsely hairy, leaves petioled ovate- 

 lanceolate coarsely serrate, inflorescence racemose, flowers opposite. 



SIKKIM HIMALAYA ; Chola, alt. 6-8000 ft.. J. D. H. KHASIA MTS., alt. 5-6000 ft. ; 

 Lobb, J. D. H. $ T. T., &c. BURMA ; Griffith. 



Stem 6-12 in., simple or branched, weak. Leaves 3-5 in., membranous. Racemes 

 fi-12 in.; bracts ovate-lanceolate, persistent: pedicels J in. Corolla-tube s: 

 1 in. long, in. diam. ; lips short, subequal, rounded. Fruiting calyx 

 Sutlets globose, T ' in. diam. Very near the Japanese P. longitubus^ Miq., and 

 a variety of it, but the cyme branches are much shorter and 1-fld. ; the i 

 cence being a simple raceme with opposite flowers. Probably both should be referred 

 to Orthosiphon. 



** Fruiting calyx longer than broad, distinctly 2-lipped for % way down, 

 upper lip subequally ^-toothed, lower 2-toothed. Corolla %- in. long, tube 

 straight, base equal. (It is not easy to distinguish this section fr. 

 next.) 



2. P. scrophularoides. Wall. PI. As. Ear. ii. 16, and Cat. 2738 ; tall, 

 slender, nearly glabrous, leaves long-petioled ovate crenate, base cordate or 

 cuneate, corolla-tube broad about twice as long as the lower lip, fruiting 

 calyx with obtuse teeth, nutlets subglobose smooth. Benth. Lab. 40, and in 

 DC. Prodr. xi. 55 ; Hook. Ic. PL t. 464 in part. 



TEMPERATE HIMALAYA, alt. 8-1000 ft., from Kumaon to Sikkim; Wallich. 



Stem 2-4 ft. or more. Leaves 3-7 in., often as broad, sparsely minutely hairy ; 

 petiole 1-4 in. Cymes in broad open slender panicles. Corolla \ in., pale rose, tube 

 nearly straight, upper lip very short, lower short, narrow, acute, hardly cymbiforin. 

 Stamens for exserted. Fruiting calyx \ in. A much larger plant than" P. Gerardi- 

 aiiii*, which it closely resembles. The figure in Icones Plantaruni (copied from a 

 drawing by Heyland of Paris) is, I suspect, made up of the magnified calyx and corolla 

 of this, but of the leaves, panicle and nutlets of P. Gerardianus. 



