. CLXXXVI. SPERMACOCE. 



621 



lobes of the calyx. Q. S. Native of the East Indies. S. 

 stricta, Roxb. fl. ind. 1. p. 376. S. lasiocarpa, R. Br. in Wall. 

 cat. no. 832. Bigelowia stricta, Spreng. syst. 1. p. 404. Flowers 

 white. 



Var. ft, latifblia (D. C. prod. 4. p. 555.) leaves ovate-lan- 

 ceolate, rather scabrous above. Native of Java, about Tugu. 

 Bigelowia stricta, Blum, bijdr. p. 945. 



Straight Button-weed. Fl. June, July. C)t. 1820. PL ^ 

 to 1 foot. 



21 S. BURMA'NNI (D. C. prod. 4. p. 555.) stem tetragonal, 

 branched, slender, rather pilose on the angles; leaves oblong- 

 linear, acuminated at both ends, scabrous above, and on the mar- 

 gins ; bristles of stipulas glabrous, about the length of the 

 sheath, which is villous ; flowers axillary, sessile, few, somewhat 

 verticillate, almost inclosed in the stipular sheaths ; fruit ovate, 

 rather hairy, crowned by the 4 acute teeth of the calyx. 

 Native of the East Indies. S. corymbosa, Burm. fl. ind. p. 34. 

 but not of Lin. Allied to S.flagelliformis. Flowers white. 



Burmann's Button-weed. PI. 



22 S. SCABE'RRIMA (Blum, bijdr. p. 946.) stem herbaceous, 

 branched, climbing ; branches quadrangular, having the angles 

 beset with retrograde down; leaves oval-lanceolate, rough above, 

 and on the veins beneath ; stipulas pubescent, furnished with 

 bristles, which are a little longer than the sheath ; stamens ex- 

 serted ; fruit glabrous, crowned by the 4 lobes of the calyx. 

 Native of Java, in humid places about Buitenzorg. Habit of S. 

 tenuior. 



Very-scabrous Button-weed. PI. climbing. 



23 S. HI'SPIDA (Lin. mant. p. 558.) plant herbaceous, erect, 

 hoary ; stem tetragonal, hispid ; leaves obovate, a little mucro- 

 nate, hispid on both surfaces, and on the margins ; bristles of 

 stipulas length or longer than the sheath ; flowers 1-3-together, 

 axillary, sessile, opposite or somewhat verticillate ; stamens 

 length of corolla ; capsule ellipsoid, hairy, crowned by the 4 

 teeth of the calyx. 0. S. Native of the East Indies. Murr. 

 comm. goett. 3. p. 77. t. 5. Cham, et Schlecht. in Linnaea. 3. p. 

 355. S. rigida, Salisb. prod. p. 60. Burm. zeyl. t. 20. f. 3. 

 Corollas turbinate, violaceous. Stamens purplish. 



Hispid Button-weed. Fl. Aug. Sept. Clt. 1781. PI. 1| foot. 



24 S. SCA'BRA (Willd. spec. 1. p. 572.) stem herbaceous, dif- 

 fuse, terete, or slightly tetragonal, scabrous from pili ; leaves 

 obovate, obtuse or acute, undulated, scabrous on both surfaces, 

 and on the margins ; bristles of stipulas rather longer than the 

 sheath, which is downy ; flowers few, axillary, verticillate ; sta- 

 mens exserted ; capsule ovate, rather hairy, crowned by the 4 

 lanceolate teeth of the calyx. Q. F. Native of Coromandel, 

 ex Roxb. ; of Malabar, ex Rheed. mal. 9. t. 76. ; and of the 

 Island of Timor. Roxb. fl. ind. 1. p. 377. S. hirta, Rottl. in 

 nov. act. nat. cur. berl. 1S03. p. 95. Flowers small, purple. 



Rough Button-weed. Fl. June, July. Clt. 1818. PI. diffuse. 



25 S. ARTICULA'RIS (Lin. fil. suppl. p. 119. exclusive of the 

 synonymes,) plant herbaceous, diffuse ; stems tetragonal, pilose 

 above at the angles ; leaves elliptic-lanceolate, hardly acute, 

 clothed with rough pubescence on both surfaces, and on the mar- 

 gins ; bristles of stipulas longer than the sheath, which is downy; 

 flowers 2-4, axillary, sessile ; capsule oval, downy, crowned by 

 the 4 teeth of the calyx. Q. F. Native in sandy places on the 

 shores of Coromandel. Roxb. fl. ind. 1. p. 378. Allied to S. 

 hispida. Stem reddish. Flowers white. Branches procum- 

 bent. 



JbinW-branched Button-weed. PI. procumbent. 



26 S. BRUNONIS (Wall. cat. no. 822.) stems herbaceous, 

 erect, tetragonal, glabrous ; leaves lanceolate, acute, sessile, gla- 

 brous, with serrulated scabrous edges ; stipulas bifid and trifid, 

 or multifid ; heads of flowers terminal, rarely axillary : the for- 

 mer involucrated by 2 long leaves, and sometimes also 2 small 



ones. 1. S. Native of Kamaon. Flowers white. Perhaps 

 a species of Borreria. 



Brown's Button-weed. PI. 1 to 2 feet. 



27 S. LONGICAU'LIS (R. Br. in Wall. cat. no. 826.) plant sca- 

 brous ; stem elongated, tetragonal, with scabrous angles ; leaves 

 oblong and obovate-oblong, opposite, and falsely verticillate, 

 scabrous ; bristles of stipulas longer than the sheath ; flowers 

 axillary, few, verticillate. If. . S. Native of the Burmese Em- 

 pire, at Prome ; and of Singapore. 



Long-stemmed Button-weed. PI. 2 to 3 feet, diffuse. 



28 S. AVA'NA (R. Br. in Wall. cat. no. 828.) stems tetra- 

 gonal, scabrous on the angles ; leaves elliptic or obovate-elliptic, 

 acute, attenuated at the base, rather scabrous, serrulated on the 

 margins ; bristles of stipulas longer than the sheath ; flowers 

 axillary, sessile, somewhat verticillate. I/ . S. Native of the 

 Burmese Empire, at Ava. Very nearly allied to the preceding. 



Ava Button-weed. PI. 1 to 2 feet. 



29 S. TE'NERA (R. Br. in Wall. cat. no. 833.) plant glabrous, 

 diffuse ; leaves lanceolate, tapering to botli ends, petiolate, 

 smooth ; flowers axillary, verticillate ; bristles of stipulas longer 

 than the sheath. Q. F. Native of the East Indies. S. ocy- 

 moides, Heyne, but not of Burm. 



Pliant Button-weed. PI. diffuse. 



30 S. COMPRE'SSA (Wall. cat. no. 6187.) plant diffuse, densely 

 clothed in every part with woolly scabrous hairs ; leaves ovate 

 or oblong, acute ; stipulas bristly ; heads of flowers axillary 

 and terminal, verticillate ; fruit compressed, crowned by the 

 teeth of the calyx. I/ . S. Native of Silhet, in the East Indies. 



Compressed-fruited Button-weed. PI. procumbent. 



f Species not sufficiently known. 

 * Species natives of Asia. 



31 S. FLExu6sA (Lour. coch. p. 79.) stem shrubby, flexuous, 

 nearly terete, procumbent ; leaves ovate-lanceolate, obliquely- 

 nerved, thick ; stipulas bristly ; whorles of flowers globose ; 

 capsule of 2 2-horned nuts, f? . G. Native of Cochin-china, 

 in hedges and among bushes. Corollas white, with revohite 

 segments. 



Flexuous Button-weed. Shrub procumbent. 



32 S. ? HEDYOTI'DEA (D. C. prod. 4. p. 555.) stem tetragonal, 

 glabrous ; leaves lanceolate ; stipulas rhomboid ; thyrse brachi- 

 ate ; bracteas subulate ; corolla tomentose inside ; anthers 

 linear ; stigma capitate ; capsule ovate, crowned by the 4-toothed 

 calyx; cells 1 -seeded. ^ . S. Native of the East Indies. 

 Hedyotis fruticosa, Retz, obs. 2. p. 8. and probably also of Lin. 

 If the cells of the fruit are truly 1-seeded, it is a true Spermacoce. 

 All the synonymes cited by authors for this plant are very 

 doubtful. 



Hedyotis-like Button- weed. PI. 



33 S. PROCU'MBENS (Lin. syst. veg. p. 124.) stems herbaceous, 

 procumbent, angular; leaves linear ; corymbs lateral, opposite, 

 pedunculate, surrounded by many-leaved involucra ; stamens 

 exserted. Native of the East Indies. S. corymb6sa, Lin. spec. 

 p. 149. but not of others. Stamens longer than the corolla. 



Procumbent Button-weed. PI. procumbent. 



34 S. ? SEMIERE'CTA (Roxb. fl. ind. 1. p. 377.) stems tetra- 

 gonal, ascending, bent in various ways, with rather hispid angles ; 

 branches brachiate, alternately smaller ; leaves ovate, acumi- 

 nated, on short petioles, scabrous ; stipulas of many bristles ; 

 whorles of flowers small, compact ; genitals inclosed ; capsule 

 turbinate, pilose. Flowers small, white. Native of Sumatra. S. 

 Roxburghiana, Wall. cat. no. 6186. Fruit not sufficiently known. 



Half-erect Button-weed. PI. | foot. 



35 S. ? COSTA' TA (Roxb. fl. ind. 1. p. 376.) plant diffuse, very 

 villous ; leaves broad-lanceolate or oblong, nerved ; stipulas 



