RUBIACE/E. CLXXXV. BOURERIA. 



613 



glabrous, erect, sparingly branched ; stem tetragonal ; leaves 

 linear-subulate, with rather scabrous margins ; bristles of the 

 stipulas the length of the sheath ; heads of flowers terminal, 

 girded each by an erect 8-leaved involucrum ; corolla tubular, 

 glabrous; anthers exserted ; teeth of the calyx 4, lanceolate, un- 

 equal, 2 of which are one half smaller than the other 2. 0. S. 

 Native of Mexico. Spermacoce subulata, Pav. ined. Flowers 

 white. 



<SW,m/ate-leaved Borreria. PI. 1 foot. 



16 B. GRACILLIMA (D. C. prod. 4. p. 543.) plant glabrous, 

 herbaceous, slender, sparingly branched ; branches rather tetra- 

 gonal ; leaves linear-subulate ; stipulas lanceolate, undivided, 

 or furnished with 3 bristles ; heads of flowers terminal, on 

 long peduncles, girded by 2-leaved involucra. Q. S. Na- 

 tive of Brazil, where it was collected by Pohl. Flowers and 

 fruit hardly known. Habit very much like that of B. subulata. 



Very slender Borreria. PI. f to 1 foot. 



17 B. pusiLLA (D. C. prod. 4. p. 543.) stem herbaceous, 

 slender, simple or branched, tetragonal, hispid under the nodi, 

 the rest glabrous ; leaves linear-lanceolate, acute, glabrous, pale 

 beneath ; bristles of the stipulas exceeding the whorles ; heads 

 of flowers small, 2-3 of them axillary, and one terminal ; in- 

 volucra 4-6-leaved; capsule oval, hairy, crowned by the 3-4 

 linear-subulate teeth of the calyx. . S. Native of Nipaul, 

 in the valley. Spermacoce pusilla, Wall. fl. ind. 1. p. 379. 

 Bigel6wia pusilla, Spreng. syst. 1. p. 405. Spermacoce trian- 

 dra, Ham. ex D. Don, prod. fl. nep. p. 134. Flowers white. 

 Very like B. tenera and B. pumila, but differs from them in the 

 calycine teeth being usually 3. 



Small Borreria. PI. ^ to foot. 



18 B. TE'NERA (D. C. 1. c.) stem herbaceous, erect, branched, 

 tetragonal, slender, hardly scabrous ; leaves linear, acute, gla- 

 brous ; bristles of stipulas shorter than the sheath, which is gla- 

 brous ; whorles of flowers dense, 3 of them axillary, and 1 ter- 

 minal, the latter larger, sessile, and involucrated by 4-6 leaves ; 

 capsule oval, smoothish, crowned by the 3-4 linear-subulate caly- 

 cine teeth. Q. S. Native of Brazil. Spermacoce tenera, Pohl, 

 in litt. Flowers white. Very nearly allied to B. pumila, but dif- 

 fers in its smoothness, and in the axils of the leaves being nearly 

 all floriferous, and in the leaves being almost always 3 times 

 shorter. 



Tender Borreria. PI. -J foot. 



19 B. PU'MILA (D. C. 1. c.) stem herbaceous, slender, tetra- 

 gonal, beset with retrograde pili ; leaves linear, acuminated, with 

 revolute margins, scabrous above, and glabrous beneath, 1- 

 nerved ; bristles of the stipulas longer than the sheath, which 

 is scabrous ; heads of flowers terminating the stem and axil- 

 lary branches, rarely axillary ; involucra 6-8-leaved ; capsule 

 oval, downy at the apex, crowned by the glabrous, subulate 

 teeth. Q. H. Native of Brazil, where it was collected by 

 Pohl. Herb with a slender root, and a stem 6 inches high. 

 Superior leaves 15 lines long, and a line broad. 



Dwarf Borreria. PI. -J foot. 



20 B. ? TE'NUIS (D. C. 1. c.) stem slender, tetragonal, erect, 

 sparingly branched, downy, especially on the angles ; leaves lan- 

 ceolate-linear, acute, downy on both surfaces, scabrous ; bristles 

 of the stipulas stiff, a little longer than the sheath, which is 

 villous ; whorles of flowers capitate, 1-2 of them axillary, and 

 1 terminal ; involucrum 2-leaved ; calycine teeth 4, glabrous, 

 unequal ; anthers inclosed. () F. Native of Brazil, where it 

 was collected by Pohl. Spermacoce tenuis, Pohl, in litt. Herb 

 6-7 inches high, indurated at the base. Fruit unknown, but from 

 habit it is judged to be a species of Borreria. 



Slender-stemmed. Borreria. PI. -j foot. 



21 B. CUPULA'RIS (D. C. 1. c.) stem herbaceous, erect, simple, 

 rather angular, downy, and rather scabrous ; leaves oval-oblong, 



acuminated, petiolate, glabrous ; upper stipulas broad-connate, 

 cup-shaped, furnished with 9-10 bristles on each side, which are 

 shorter than the sheath ; heads of flowers 2, 1 axillary, and 

 1 terminal and larger : capsule oval, downy at the apex, crowned 

 by the 4 oblong teeth of the calyx. 0. F. Native of Brazil, 

 where it was collected by Pohl. Spermacoce pusilla, Pohl. in 

 litt. but not of Wall. Herb 5-6 inches high. Flowers densely 

 crowded in the cups formed by the stipulas, white. 

 Cu^JM/ar-stipuled Borreria. PI. -J foot. 



22 B. OCYMOIDES (D. C. prod. 4. p. 544.) stem herbaceous, 

 branched, tetragonal, with the angles hairy and winged ; leaves 

 ovate, tapering into the petioles at the base, acutish, glabrous ; 

 bristles of the stipulas few, rather shorter than the sheath ; 

 whorles of flowers axillary, sessile, dense ; capsule small, 

 ovate, crowned by the 2-4 small teeth of the calyx. . H. 

 Native of the East Indies. Spermacoce ocymoldes, Burm. fl. 

 ind. 34. t. 13. f. 1. but the angles of the steins are said to be 

 glabrous. 



Basil-like Borreria. PL ^ foot. 



23 B. RAMISPA'RSA (D. C. prod. 4. p. 544.) smoothish ; stem 

 herbaceous, dichotomous, tetragonal ; leaves oval-oblong, acute 

 at both ends ; bristles of the stipulas membranous, pale, longer 

 than the sheath ; whorles of flowers capitate in nearly all the 

 axils, and on the tops of the branches, equal in size, sessile, 

 girded by 2-4 leaves ; capsule small-ovate, smoothish, crowned 

 by the teeth of the calyx, of which 2 are larger and subulate, 

 and 2 small. Q ? F. Native of Brazil, where it was collected 

 by Pohl. Angles of the stems, nerves of the leaves, and the 

 base of the calyxes downy, the rest of the herb glabrous. 

 Flowers white. 



Scattered-branched Borreria. PI. J to |- foot. 



24 B. PARV1FL6RA (Meyer, esseq. p. 83. t. l.)stem herbaceous, 

 erect, tetragonal, with the angles usually hairy, and a little 

 winged below ; leaves oval-oblong, tapering to both ends, ra- 

 ther hairy beneath while young, and at length scabrous on the 

 margins ; bristles of the stipulas longer than the sheath ; whorles 

 of flowers axillary and terminal, dense, small, involucrated by 

 2-4 leaves ; capsule ovate, crowned by the 4 short subulate 

 calycine teeth. Q. F. Native of the West Indies, as of 

 Porto Rico, Guadeloupe, St. Domingo, &c. ; and of Peru. 

 Spermacoce aspera, Vahl, eel. p. 10. but not of Aublet. Sper- 

 macoce lae'vis from Guadaloupe, and Sperm, aspera from His- 

 paniola, Spreng. syst. 1. p. 401. ex herb. Balb. Perhaps Sper- 

 macoce Ice vis, Lam. is identical with this plant. This spe- 

 cies, with many others, is very intricate, but is nearly allied 

 to B. ramispdrsa. It differs from B. dspera, Aublet, in the 

 much less scabrous stem, in the shorter leaves, and in the 

 smaller whorles of flowers. Flowers white. Bigelomia as- 

 pera, Sieb. is a distinct plant from this. Bristles of the stipulas 

 pilose. 



Small-flowered Borreria. PI. 1 to 2 feet, 



25 B. ? ALA'TA (D. C. prod. 4. p. 544.) stems herbaceous, 

 diffuse, indicant, branched, glabrous, tetragonal, with winged 

 angles ; leaves smooth oval, acuminated ; bristles of the stipu- 

 las longer than the sheath ; heads of flowers terminal, girded 

 by 4 leaves; style bifid to the middle. O- F. Native of 

 French Guiana, at the river Aroura. Spermacoce alata, Aubl. 

 guian. 1. p. 60. t. 22. f. 7. Flowers white. Fruit divisible 

 into 2, 1 -seeded, dehiscent nuts. It is nearly allied to B. Bart- 

 lingiana, but the structure of the fruit and flowers is doubtful. 

 Superior leaves sessile, rather cordate at the base. Stamens 

 didymous, 2 of which are shorter than the corolla. Corollas 

 rather large, blue. 



Winged-stemmed Borreria. PI. creeping. 



26 B. BARTLINGIA'NA (D. C. prod. 4. p. 544.) stem herba- 

 ceous, diffuse, radicant, tetragonal, with winged pilose angles, 



