712 



LABIATE. XVIII. POGOSTEMON. XIX. DYSOPHYLLA. 



of India, Heyne. Stems woody at the base. Raceme 2-3 

 "inches long. 



Clothed Pogostemon. PI. ascending. 



9 P. ROTUNDA'TUM (Benth. 1. c.) villous ; stem ascending ; 

 leaves roundish, doubly crenated, truncate at the base or cor- 

 date ; upper floral leaves shorter than the calyxes ; racemes 

 simple ; whorls equal, rather remote ; bracteas linear-subulate ; 

 calyx villous, with lanceolate teeth ; filaments bearded. 0. ? 

 S. Native of the peninsula of India, Heyne. Stem procum- 

 bent at the base. Raceme 2-3 inches long. Corolla small. 



Roundish-leaved Pogostemon. PI. 1 foot. 



10 P. MOLLE (Benth. lab. p. 155.) clothed with soft villous 

 tomentum; stem ascending ; leaves broad-ovate, crenated, round- 

 edly cuneated at the base : floral ones rather longer than the 

 calyxes ; racemes simple ; whorls equal : lower ones remote : 

 upper ones approximate ; bracteas linear-subulate ; calyx vil- 

 lous, with lanceolate-subulate teeth; filaments bearded. Q.I 

 S. Native of the peninsula of India, among the mountains of 

 Madura, Wight. Stem more branched than that of P. rotundi- 



fblium ; and the leaves more numerous, and not half the 

 size, &c. 



Soft Pogostemon. PI. 1 to 2 feet. ? 



IIP. HIRSU'TUM (Benth. lab. p. 155.) hairy from adpressed 

 pili ; stem ascending; leaves petiolate, ovate, acuminated, ser- 

 rated, rounded at the base ; upper floral leaves shorter than the 

 calyxes j racemes simple ; whorls equal, distinct ; bracteas 

 linear-subulate ; calyx hispid, with lanceolate, acute teeth ; fila- 

 ments shortly exserted, bearded. Q. ? S. Native of Ceylon, 

 Macrae. Racemes 2-3 inches long. Corollas small. Filaments 

 densely bearded with purplish hairs. 



Hairy Pogostemon. PI. 1 to 2 feet. ? 



12 P. RUPE'STRE (Benth. lab. p. 156.) glabrous ; stem creep- 

 ing ; branches ascending ; leaves petiolate, ovate -lanceolate, 

 coarsely -toothed, narrowed at the base : floral ones and brac- 

 teas minute ; racemes simple ; whorls remote, few-flowered ; 

 calyx glabrous, with ovate, short teeth ; filaments bearded . It . 

 S. Native of Ceylon, among rocks at Nuera Ellia, Macrae. 

 Leaves 1 to If inch long. Corollas minute. 



Rock Pogostemon. PI. creeping, 1 foot. ? 



13 P. SPECIOSUM (Benth. 1. c.) plant pilosely hispid; stem 

 .erect ; leaves broad-ovate, cordate at the base, doubly cre- 

 nated ; racemes simple ; whorls terete, loose, approximate ; 

 bracteas minute : calyx nearly glabrous, tubular, with subulate 

 teeth; filaments naked. .?S. Native of the peninsula of 

 India, among the mountains of Madura, Wight. This differs 

 from the following, in the leaves being larger and broader, 

 and cordate at the base ; also in the spikes being dense, and 

 in the genitals being much exserted. 



Showy Pogostemon. PI. 1 to 3 feet. ? 



14 P. WI'GHTII (Benth. lab. p. 156.) plant pilosely hispid; 

 stem erect ? ; leaves petiolate, ovate, acute, doubly toothed or 

 cut, roundly cuneated at the base ; racemes simple ; whorls 

 equal, approximate, or the lower ones are remote ; bracteas 

 linear-subulate ; calyx glabrous, with lanceolate-setaceous, his- 

 pid teeth ; filaments naked. . ? S. Native of the peninsula 

 of India, among the mountains of Madura. Leaves like those 

 of Lamium, Corollas minute. Filaments glabrous, or finely 

 pubescent. 



Wight's Pogostemon. PI. ? 



15 P. MENTHOI'DES (Blum, bijdr. p. 825.) stem herbaceous ; 

 leaves ovate, acutish at both ends, doubly toothed above the 

 base, pubescent ; spike terminal, elongated, simple : whorls 

 approximate ; filaments naked. . ? S. Native of Java, in 

 humid woods on Mount Gede. 



Mint-like Pogostemon. PI. ? 



Cult. For culture and propagation see Elsholtzia, p. 714. 



XIX. DYSOPHY'LLA (from Svao^ic, dysodes, fetid ; and 

 <bv\\ov, phyllon, a leaf; probably in reference to the offensive 

 smell of the leaves.) Blum, bijdr. p. 826. Benth. lab. p. 156. 

 Chotekia, Opiz. et Corda, in bot. zeit. 1830. 1. p. 33. 

 Mentha species of Lin. 



LIN. SYST. Didynamia, Gymnospermia. Calyx ovate, equal, 

 5-toothed ; throat naked inside. Corolla with an inclosed tube, 

 and a nearly equal, quadrifid limb : upper lobe entire or emar- 

 ginate : lower one spreading a little. Stamens 4, exserted, 

 straight or hardly declinate ; filaments bearded in the middle ; 

 anthers terminal, 1-celled, dehiscing by a transverse chink. 

 Style somewhat equally bifid at top : lobes subulate ; stigmas 

 minute, terminal. -Herbs, with opposite or verticillate leaves. 

 Whorls many-flowered, densely approximate, or imbricate into 

 terminal spikes. This genus differs principally from Pogostemon 

 in the more regular corolla. 



I. OPPOSITIFOLLS:. Leaves opposite. 



1 D. STRIGOSA (Benth. in Wall. pi. rar. asiat. 1. p. 30. lab. 

 p. 157.) clothed with strigose, adpressed hairs; stem erect; 

 leaves opposite, nearly sessile, lanceolate-ovate, coarsely ser- 

 rated : floral ones lanceolate, shorter than the flowers; spikes 

 thick, rather loose ; calyx ovate, hairy, with subulate, erect 

 teeth. I/ . ? S. Native of Silhet, Wall. Leaves \\ inch long. 

 Spikes somewhat interrupted, 3-4 inches long. Corolla some- 

 what irregular. Intermediate between Pogostemon and Dysso- 

 phylla. 



Slrigose Dysophylla. PI. 1| foot. 



2 D. MYOSUROI DES (Benth. 1. c.) clothed with silky tomen- 

 tum ; stem erect ; leaves opposite, on short petioles : floral 

 ones ovate, minute ; spikes dense ; calyx tomentose, with short 

 straight teeth. !(.. S. Native of the peninsula of India. 

 Mentha myosuroides, Roth, nov. spec. p. 257. Leaves irregu- 

 larly subcrenated. Corollas very minute. 



Mouse-tail-like Dysophylla. PI. to 1 foot. 



3 D. AURICULA'RIA (Blum, bijdr. p. 826.) clothed with soft 

 spreading hairs ; stems procumbent ; leaves opposite, nearly 

 sessile, ovate-oblong, coarsely serrated : floral ones ovate- lan- 

 ceolate, about equal in length to the flowers ; spikes very 

 dense ; calyx villous, with ovate teeth, which connive after flo- 

 rescence. If.. S. Native of the East Indies, in the peninsula 

 and islands of the Indian Archipelago, in ditches and bogs ; 

 Ceylon, Bengal, Penang, Bournou, Amboyna, and Moluccas. 

 Mentha auricularia, Lin. mant. p. 81. Mentha fce'tida, Burm. 

 ind. p. 126. Majana fce'tida, Rumph. amb. 6. p. 41. t. 16. 

 f. 2. 



Auricled Dysophylla. PI. procumbent. 



2. VERTICILLA'TJE. Leaves verticillate. 



4 D. CRUCIA'TA (Benth. 1. c.) clothed with soft spreading 

 hairs ; stems elongated, procumbent, nearly simple ; leaves 4 in 

 a whorl, rarely 5 or 6, lanceolate, obtuse, quite entire, with re- 

 volute margins : floral ones lanceolate, about equal in length to 

 the flowers ; spikes dense ; lower whorl distinct ; calyx villous, 

 with bluntish erectish teeth. If. . S. Native of Nipaul. Mentha 

 quadrifolia, D. Don, prod. fl. nep. p. 113. but not of Roxb. 

 Corollas purple. 



Cruciate-leaved Dysophylla. Fl. July, Aug. Clt. 1820. 

 PI. procumbent. 



5 D. QUADRIFOLIA (Benth. 1. c.) clothed with tomentose villi ; 

 stem erect ; leaves 4 in a whorl, elliptic-linear, quite entire, or 

 remotely serrated, narrowed at both ends : floral ones linear, 

 shorter than the whorls ; spikes elongated, rather interrupted 

 at the base ; calyx ovate, with narrow-lanceolate, acute, erect 

 teeth. 2. S. Native of the East Indies, in stagnant water 



