RUBIACE.E. CLXXXVIII. DIODIA. 



625 



12 D. sARMENi6sA (Swartz, fl. ind. occ. 1. p. 231.) stem 

 climbing, suff'ruticulose, tetragonal, villous, particularly on the 

 angles - r leaves oval-oblong, acute, scabrous from muricae, ru- 

 gosely nerved in the adult state ; bristles of stipulas stiffish ; 

 fruit oval, rather tetragonal, crowned by the 4 lanceolate teeth 

 of the calyx. ^ S. Native of Jamaica, Porto-Rico, St. 

 Thomas, &c. Spermacoce radula, Spreng. neu. entd. 2. p. 1 44. 

 Schultes, mant. 3. p. 207. but not of Willd. Diodia sarmen- 

 tosa e Guadalupa, Spreng. syst. 1. p. 405. is a species of Bor- 

 reria. Flowers solitary, axillary, white. Corolla with a tetra- 

 gonal tube. 



Twiggy Diodia. Fl. June, Aug. Clt. 1821. Shrub cl. 



13 D. LA.TIFLORA. (D. C. prod. 4. p. 563.) stems suffruti- 

 cose ; branches nearly terete, clothed with velvety down ; leaves 

 lanceolate, acutely awned, rather downy above, and scabrous be- 

 neath from hispid down ; bristles of stipulas numerous, long ; 

 corolla campanulately funnel-shaped, with a broad glabrous 

 throat, and acute rather ciliated lobes ; fruit obovate-globose, 

 crowned by the 4 linear teeth of the calyx. Tj . S. Native of 

 St. Domingo. Spermacoce barbata, Spreng. in herb. Balb. but 

 not of Lam. D. scandens, Vahl, herb, ex Puer. Very nearly 

 allied to D. scandens, and probably only a variety of it. Corolla 

 5 lines long, obconical, white. 



Broad-flowered Diodia. Shrub cl. 



14 D. GRANDIFLORA (D. C. prod. 4. p. 563.) stems twiggy, 

 flexuous, sparingly branched, tetragonal, glabrous, hardly pilose 

 at top ; leaves linear, cuspidate, glabrous on both, surfaces, with 

 serrulately scabrous margins, ciliated at the base ; bristles of sti- 

 pulas equal in length to the fruit ; flowers axillary, sessile, op- 

 posite ; corolla glabrous ; fruit obovate-globose, rather hairy, 

 crowned by the 4 lanceolate, acuminated, unequal calycine teeth. 

 \i . S. Native of St. Domingo, where it was collected by Bertero. 

 Spermacoce grandiflora, Spreng. neu. entd. 3. p. 45. syst. 1. p. 

 400. Flowers white. Nuts of fruit truly indehiscent. Allied 

 to D. scandens and D. latiflora. 



G real-flowered Diodia. Shrub. 



15 D. CONFE'RTA (D. C. prod. 4. p. 563.) stem ascending ; 

 branches hairy, almost tetragonal ; leaves ovate, acuminated, termi- 

 nated by a long hair each, sessile, with serrulately scabrous edges, 

 hairy beneath ; bristles of stipulas numerous, stiff, longer than the 

 sheath, fj . S. Native of Brazil, where it was collected by Schott. 

 Spermacoce conferta, Schott. ex Pohl, in litt. Fruit not seen, but 

 from its analogy with D. polyseta it has been placed in this genus. 



Crowded-flowered Diodia. Shrub 3 to 4 feet. 



16 D. SETI'GERA (D. C. prod. 4. p. 563.) stem ascending, 

 suffruticose at the base, somewhat tetragonal, hairy ; leaves ses- 

 sile, ovate-lanceolate, subcordate at the base, and terminating in 

 a bristle at the apex, ciliated on the nerve and margins : the 

 cilise largest towards the base ; bristles of stipulas longer than 

 the sheath, which is smoothish ; fruit nearly globose, ribbed, 

 glabrous, crowned by the 4 teeth of the calyx. fy . S. Native 

 of Brazil, about Bahia, in arid places, where it was collected by 

 Salzmann. Corolla blue, with acuminated lobes. 



Bristle-bearing Diodia. Shrub ascending. 



17 D.? BARBARA (D. C. 1. c.) plant procumbent, scabrous; 

 branches tetragonal, downy ; leaves lanceolate, villous ; bristles 

 of stipulas long ; flowers few, axillary. Native of St. Domingo. 

 Spermacoce barbata, Lam. ill. no. 1437. Poir. diet. 7. p. S14. 

 Allied to D. longiflora" and D. longiseta, but the fruit is un- 

 known. The flowers are said to be small. Leaves hardly an 

 inch long : superior ones disposed in fascicles. 



Bearded Diodia. PL procumbent. 



18 D. POLYSE'TA (D. C. 1. c.) branches or stems simple, 

 twiggy, rather tetragonal, hispid from long spreading stiff hairs ; 

 leaves lanceolate, acute, hispid from long spreading pili ; bristles 

 of stipulas numerous, long, stiffish ; fruit 2-3-together, axillary, 



VOL. III. 



roundish, crowned by the 4 small teeth of the calyx. fj . S. 

 Native of Porto-Rico. 



Many-bristled Diodia. Shrub. 



19 D. MARI'TIMA (Schum. pi. guin. p. 75.) stems prostrate, 

 tetragonal, with furrowed sides, and scabrous angles ; leaves 

 oval or oblong, having the margins scabrous from serrulations, 

 rather downy or hairy on both surfaces ; bristles of sti- 

 pulas stiffish ; fruit oval-oblong, crowned by the 4 lanceolate 

 teeth of the calyx. I/ . S. Native of Guinea, along the coast 

 in the sand. Flowers white. 



Far. ft, commutata (D. C. prod. 4. p. 564.) leaves glabrous 

 on both surfaces. 1 . S. Native of Porto-Rico, in the sand 

 by the sea side, where it was collected by Bertero and Wydler. 

 Spermacoce commutata, Schultes, mant. 3. p. 208. There are 

 varieties of this plant with either elongated or tufted branches, and 

 having the axils of the leaves naked, or bearing fascicles of leaves 

 or branches, and with the leaves flat, or nervosely furrowed. 



Far. serrulata (D. C. prod. 4. p. 564.) stem erectish ; mar- 

 gins of leaves evidently serrulated. "If.. H. Native of equi- 

 noxial Africa, in the kingdom of Waree. Spermacoce serrulata, 

 Beauv. fl. d'ow. 1. p. 39. t. 23. Nerves of leaves reddish. 

 Flowers axillary, sessile, verticillate. 



Sea-side Diodia. PI. prostrate. 



20 D. RI'GIDA (Cham, et Schlecht. in Linnaea. 3. p. 341.) 

 stem suffruticose, creeping, quadrangular, hairy ; leaves lanceo- 

 late, piliferous at the apex, stiff, with serrulated margins, hairy 

 beneath ; stipulas hairy, ciliated at the apex ; fruit obovate, gla- 

 brous, crowned by the 4 linear-subulate teeth of the calyx, f? . 

 S. Native of the Spanish Main, near Caraccas ; of St. Domingo ; 

 Brazil, in the province of Para, and of the Society Islands. 

 Spermacoce rigicla, H. B. et Kunth, nov. gen. amer. 3. p. 342. 

 Sperm, apiculata and Sperm, rigida, Willd. in Schultes, syst. 3. 

 p. 531. Sperm, setosa, Willd. herb, but not of Schultes. Flowers 

 white. 



Stiff Diodia. Shrub creeping. 



21 D. ARTICULA'TA (D. C. prod. 4. p. 564.) glabrous; stem 

 shrubby, terete, nodose ; leaves linear, acute at both ends, with 

 rather revolute edges, also smooth on the margin and mid-rib ; 

 bristles of stipulas stiff, shorter than the sheath ; whorles 6-8- 

 flowered ; fruit obovate-oblong, crowned by the 4 calycine teeth. 

 1? . S. Native of Brazil, where it was collected by Pohl. Sper- 

 macoce articulata, Pohl, in litt. Leaves in axillary fascicles, hence 

 they appear in whorles, very like those of Uippuris. 



Jointed-stemmed Diodia. Shrub. 



22 D. ROSMARINIFOLIA (Pohl, in litt. ex D. C. prod. 4. p. 

 564.) stem herbaceous, erect, simple, terete, hairy; leaves linear, 

 ending in a long hair each, with rather revolute edges, glabrous, 

 but scabrous from serrulations on the margins and nerve below ; 

 bristles of stipulas very long ; fruit oval, crowned by the 4 

 calycine teeth. Q. F. Native of Brazil, where it was collected 

 by Pohl. This is a very distinct species, having the ciliae of the 

 stipulas half an inch long, about half the length of the leaves. 



Rosemary-leaved Diodia. PL -J to 1 foot ? 



23 D. ARENO'SA (D. C. prod. 4. p. 564.) stem decumbent, 

 branched, tetragonal, rather scabrous above ; leaves lanceolate- 

 linear, sessile, acuminated, with revolute edges, rather scabrous 

 on both surfaces ; bristles or ciliae of stipulas longer than the 

 sheath; whorles 8-10-flowered ; fruit obovate-globose, scabrous 

 from down, crowned by the 4 calycine teeth. Tj . TJ. . S. Native 

 of Brazil. Spermacc.ee arenosa, Pohl, in litt. Nuts of fruit in- 

 dehiscent. If Spermacoce ciliaris, Pav. in herb. Moric, be the 

 same it is also a native of New Spain. 



Sand Diodia. PL decumbent. 



24 D. MULT*LO'RA (D. C. prod. 4. p. 564.) stem and 

 branches long and twiggy, compressedly tetragonal, hairy ; leaves 

 lanceolate, sessile, acute, lined, beset with stiff villi on both sur- 



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