676 



LABIATE. V. MOSCHOSMA. VI. ORTHOSIPHON. 



longer and more loose, the lower teeth of the calyx narrowed, 

 and the style more deeply bifid. 



Southern Moschosma. PI. 1 to 2 feet. 



3 M. DIMIDIA'TUM (Benth. lab. 24.) stem acutely tetragonal, 

 with smooth angles; racemes elongated; whorls about 10- 

 flowered, glomerate, remotish. 0. S. Native of the west 

 coast of Africa, within the tropics. O'cymum dimidiatum, 

 Schum. pi. guin. 1. c. p. 41. Very nearly allied to the pre- 

 ceding ; but differs in the larger leaves, longer racemes, smaller 

 flowers, and usually 10-flowered, distant whorls. 



Dimidiate Moschosma. PI. 1 to 2 feet. 



4 M. OCYMOI'DES (Benth. in Wall. pi. rar. 2. p. 13.) stem 

 tetragonal, with rough angles; whorls loose, C-flowered. Q. 

 S. Native of the East Indies, in Silhet. Lumnitzera ocy- 

 moldes, Jacq. 1. c. O'cymum polycladum, Link. enum. 2. p. 

 119. Habit of M. polystachya ; but the leaves are more 

 acutely serrated, hispid above, and canescent beneath. Upper 

 lip of calyx tridentate : teeth ovate : middle tooth the broadest; 

 lower lip bidentate : teeth lanceolate, acute. 



Basil-like Moschosma. Fl. July, Sept. Clt. 1823. PI. 1 

 to 2 feet. 



f A species doubtful whether belonging to the genus. 



5 M. C V SIA (Benth. lab. p. 25.) branches smoothish, terete ; 

 leaves ovate, dentately crenated ; peduncles subverticillate, 

 bracteate at the base. Q. S. Native country unknown. Lum- 

 nitzera cse'sia, Spreng. cur. post. 223. 



Grey Moschosma. PI. 1 to 2 feet.? 



Cult. For culture and propagation see Ocy'mum, p. 674. 



VI. ORTHOSITHON (from op0oc, orthos, straight ; and 

 <ri(j>iiit', siphon, a tube ; in reference to the straight tube of the 

 corolla.) Benth. in Bot. reg. vol. 15. lab. p. 25. 



LIN. SYST. Didynamia, Gymnospermia. Calyx ovate-tubular, 

 5 -toothed ; margins of superior tooth, which is ovate, mem- 

 branous, decurrent, winged, deflexed after florescence. Corolla 

 with a straight or incurved exserted tube, neither gibbous nor 

 refracted ; throat equal or rarely inflated, bilabiate ; upper lip 

 3-4-cleft : lower one quite entire, concave. Stamens 4, decli- 

 nate ; filaments free, toothless ; anthers ovate-reniform, with 

 confluent cells. Style clavately capitate at apex, nearly entire 

 or shortly emarginate ; stigmas confluent in the fork, sometimes 

 minute, sometimes capitately thickened. Achenia rugged from 

 minute dots. Perennial herbs or undershrubs. Racemes sim- 

 ple, usually elongated, rarely ovate-spike-formed ; whorls 6- 

 flowered, distant, loose. Floral leaves bractea-formed, ovate, 

 acuminated, reflexed, usually shorter than the pedicels. Fructi- 

 ferous pedicels recurved. The chief characters which distin- 

 guish this genus are the length of the tube of the corolla, and 

 the capitate apex of the style. 



1 O. RUBICU'NDUS (Benth. in Wall. pi. rar. asiat. 2. p. 14.) 

 stems tufted, leafy at the base, branched ; leaves oblong-ovate, 

 coarsely toothed, narrowed at the base : lower ones petiolate : 

 superior ones sessile ; tube of corolla straight ; throat nearly 

 equal, twice as long as the calyx ; stamens equal in length to 

 the corolla. %. S. Native of the East Indies. Plectranthus 

 rubicunda, D. Don, prod. fl. nep. p. 116. Lumnitzera rubi- 

 cunda, Spreng. cur. post. p. 223. Root often tuberous. Stems 

 tetragonal, more or less villous from articulated clammy hairs. 

 Leaves 2-3 inches long, full of glandular dots. Corolla white 

 or pale purple. 



Var. a, mollissimus (Benth. lab. p. 26.) leaves clothed with 

 soft villi on both surfaces. I/. S. Native of Nipaul and 

 Kamaon, W r all. Plectranthus mollissimus, Wall. mss. 



Var. ft, canescens (Benth. 1. c.) leaves clothed with short 



tomentose pubescence. % . S. Native of the mountains of 

 Orixa, Roxb. ; and at Segain, in the Birman Empire. Plec- 

 tranthus tuberosus, Roxb. mss. O'cymum tuberosum, Roxb. in 

 herb. Banks. 



Var. y, rigidus (Benth. 1. c.) leaves smoothish, or clothed 

 with very short tomentum. 7 . S. Native at Natbpur and 

 Monghyr, Hamilt. 



Reddish Orthosiphon. PI. 1 to 1J foot. 



2 O. VIRGA'TUS (Benth. in Wall. pi. rar. 2. p. 14. lab. p. 26.) 

 stems tufted at the base ; branches erect, strict ; leaves oblong- 

 lanceolate, a little toothed, narrowed at the base, sessile, or the 

 lower ones stand on short petioles ; corolla twice as long as the 

 calyx : tube straightish : throat nearly equal ; stamens about 

 equal in length to the corolla. I/ . S. Native of the East 

 Indies, at Gorakpur, and in the mountains of Morang, Hamilt.; 

 mountains about Mohun, Jacquemont. Plectranthus virgata, 

 D. Don, prod. fl. nep. p. 116. Lumnitzera virgata, Spreng. 

 syst. cur. post. 223. This species differs from 0. rubicundus in 

 the stems being taller ; in the leaves being narrower ; in the 

 racemes being shorter and fewer flowered ; in the whorls being 

 more remote ; in the corollas being smaller ; in the stems being 

 less leafy, and in the whole plant being smoothish. 



Twiggy Orthosiphon. PI. 1 foot. 



3 O. TOMENTOSUS (Benth. 1. c.) stem sufFruticose ; branches 

 ascending, clothed with tomentose pubescence ; leaves petiolate, 

 ovate, cuneated at the base, rounded or subcordate, thickish, 

 clothed with very short tomentose pubescence on both surfaces ; 

 petioles and axils naked ; racemes elongated ; corolla 3 times 

 as long as the calyx : tube incurved a little : throat widened a 

 little; stamens shorter than the corolla. fj . S. Native of the 

 East Indies, near Madras, Wight. O'cymum triste, Roth. nov. 

 spec. 270. ? Plectranthus tristis, Spreng. syst. 2. p. 690. In- 

 termediate between 0. viscbsus and O. glabrdtus. 



Tomentose Orthosiphon. Shrub. 



4 O. PA'LLIDUS (Royle, mss. Benth. in Hook. bot. misc. 3. 

 p. 370. lab. p. 708.) glabrous or finely pubescent ; stem 

 ascending ; leaves ovate, petiolate, bluntly and coarsely toothed, 

 quite entire at the base, cuneated, and running into the petioles ; 

 corolla small : tube about equal in length to the calyx : throat 

 nearly equal ; stamens shorter than the corolla. 7{.S. Native 

 of the East Indies, on the banks of the Jumna, Royle; Cash- 

 mere ; and the Peninsula. Allied to 0. tomentbsus. 



Pale Orthosiphon. PI. 



5 O. GLABRA'TUS (Benth. in Wall. pi. rar. asiat. 2. p. 14. lab. 

 p. 28.) stems ascending, branched, glabrous ; leaves on long 

 petioles, ovate, acute, toothed, rounded or subcordate at the 

 base, smoothish ; corolla incurved a little : tube twice as long 

 as the calyx : throat nearly equal ; stamens shorter than the 

 corolla. Ij . S. Native of the East Indies, Arabia, Guinea, 

 Madagascar. O'cymum thymiflorum, Roth. nov. spec. 269. 

 Plectranthus thymiflorus, Spreng. syst. 2. p. 690. O'cymum 

 suffruticosum, Schum. pi. guin. in act. hafn. suppl. O'cymum 

 Thonningii, Schum. pi. guin. in act. acad. hafn. 4. p. 43. Co- 

 rollas small, dark purple. Branches and often the leaves are 

 purplish, glabrous, or scabrous from minute pili. 



Glabrous Orthosiphon. PI. 1 to 1 foot. 



6 O. INCU'RVUS (Benth. 1. c.) stem procumbent at the base, 

 ascending ; leaves petiolate, oblong, crenated, narrowed at both 

 ends, and clothed with fine pubescence ; whorls subsecund ; 

 corolla villous, incurved, 3 times longer than the calyx : throat 

 nearly equal ; stamens about equal in length to the corolla. 

 If. . S. Native of the East Indies, in Silhet. Leaves 2-3 

 inches long. Tube of corolla exserted, usually very much in- 

 curved : lips spreading, as in Stachys and Betonica. 



Incurved-ftowered Orthosiphon. PI. 1 foot. 



7 O. SCA'PIGER (Benth. 1. c.) stems erect, simple, scape- 



