464 



TRIBE X. 



SPERMACOCE*. Stigma bilamellate (f. 189. b.). Fruit dry, 

 and rather fleshy, usually composed of 2 1-seeded mericarps. 

 rarely of 3-4, which are sometimes joined together and sometimes 

 separating, indehiscent, but sometimes dehiscing in various mays. 

 Albumen between fleshy and horny. Shrubs or herbs. Leaves 

 opposite. Stipulas membranous at the base, and usually divided 

 into many bristles at the apex. 



SUBTRIBE!. CEPHALA'NTHE*. Flowers and fruit sessile, densely 

 aggregate, seated on a globose receptacle. Fruit divisible into 

 two parts. Shrubs. 



182 CEPHALA'NTHUS. Limb of calyx angular, 4-toothed. 

 Corolla tubular, slender, with a 4-cleft limb. Stamens 4, short, 

 inserted in the tube, hardly exserted. Style exserted ; stigma 

 capitate. Fruit crowned. 



SUBTRIBE II. EUSPERMACOCE*:. Flowers distinct. Fruit dry, 

 usually divisible into 2 parts, and sometimes in 3 or 4 parts. 

 Usually herbs, rarely shrubs. 



183 DEMOCRITEA. Lobes of calyx 5, lanceolate, acute, stiff. 

 Corolla, stamens, and style unknown. Fruit 2-celled, 2-seeded 

 when young, but becoming 1 -celled from the dissepiment having 

 vanished at maturity. Seeds free within the pericarp. A 

 shrub. 



184 O'CTODON. Limb of calyx with 8 very short teeth. 

 Corolla campanulate, 4-cleft, beset with adpressed hairs inside, 

 which are tipped with glands. Stamens inserted in the bottom 

 of the tube. Stigma globular. Capsule turbinate, obsoletely 

 tetragonal, 2-celled, 2-valved, dehiscing at the dissepiment. 



185 BORRE'RIA. Limb of calyx 2-4-toothed. Corolla salver- 

 shaped or funnel-shaped, 4-lobed. Stamens 4, exserted or in- 

 closed. Stigma bifid or undivided. Capsule crowned, 2-celled, 

 dehiscing at the dissepiment when mature ; coccula bursting by 

 a longitudinal chink inside. 



186 SPERMACOCE. Limb of calyx 2-4-toothed (f. 108. a.), 

 with sometimes accessory teeth. Corolla salver-shaped or fun- 

 nel-shaped, 4-lobed (f. 108. c.). Stigma bifid or undivided (f. 

 108. e.). Capsule crowned (f. 108. f.), 2-celled : nuts divisible 

 into two parts from the apex, one open and the other closed. 



187 HEXASE'PALUM. Limb of calyx 6-parted. Corolla cam- 

 panulately funnel-shaped, with an obconical tube and 4 lanceo- 

 late lobes. Stamens 4, shorter than the lobes of the corolla. 

 Fruit oblong, dry, divisible into two parts at the dissepiment ; 

 the dissepiment being double the nuts are both closed. 



188 DIODIA. Calyx with a 2-4-toothed limb, rarely more. 

 Corolla funnel-shaped, with a 4-lobed limb. Stamens 4, exserted 

 or inclosed. Style bifid or undivided. Fruit crowned, divisible 

 into two parts : the parts indehiscent. 



189 TRIODON. Limb of calyx 2-4-toothed, with sometimes 

 other accessory teeth. Corolla short, funnel-shaped, 4-cleft. 

 Stigma bifid. Capsule papery, crowned, 2-celled : nuts 2, in- 

 dehiscent, having the axis tridentate and remaining after the nuts 

 have fallen. 



RUBIACE^E. 



190 CRU'SEA. Limb of calyx constricted above the ovarium, 

 profoundly cleft into 4 linear lobes, and 4 accessory small ones. 

 Corolla salver-shaped, with a long tube, a glabrous throat, and 

 4-lobed limb. Stamens exserted. Style exserted, bifid at the 

 apex. Fruit of 2 indehiscent nuts, adhering to a flat membra- 

 nous permanent axis, but at length separating from it. 



191 RICHARDSONIA. Limb of calyx of 4-7 unequal teeth. 

 Corolla funnel-shaped, with an obconical tube, and a 3-5-lobed 

 spreading limb. Stamens 3-5, exserted. Style 3-4 cleft at the 

 apex. Capsule crowned at first, containing 3-4 1-seeded mem- 

 branous indehiscent nuts. Seeds peltate. 



192 KNO'XIA. Teeth of calyx 4, unequal. Corolla salver- 

 shaped, with a terete tube, a usually bearded throat, and a 4- 

 lobed limb. Anthers at the throat. Stigma 2-lobed. Fruit 

 2-celled: the 2 nuts usually separating from the base to the apex 

 at the dissepiment. Seed ovate-triquetrous. 



193 PSYLLOCA'RPUS. Limb of calyx 8-toothed, unequal. 

 Corolla funnel-shaped, having the tube bearded at the throat, 

 and an acutish 4-lobed limb. Anthers 4, inclosed. Stigma 2- 

 lobed. Capsule crowned, compressed from the back of the 

 carpels, 2-celled : dissepiment parallel with the valves. Small 

 shrubs. 



194 MITRACA'RPUM. Limb of calyx 4-toothed; teeth un- 

 equal. Corolla salver-shaped, with a terete tube, having a cir- 

 cular line of hairs near the base inside, a glabrous throat, and a 

 4-lobed limb. Anthers exserted or inclosed. Stigma bifid. 

 Capsule membranous, crowned, 2-celled, circumcised about the 

 middle. 



195 CRUCKSHA'NKSIA. Limb of calyx 4-toothed : teeth 

 usually having an accessory tooth on each side, 1 or 2 of which 

 are usually expanded into roundish wings. Corolla salver- 

 shaped, with an elongated tube, a 5-cleft spreading limb, and a 

 glabrous throat. Stamens 5, exserted, inserted in the mouth of 

 the corolla. Anthers linear-oblong, fixed by the base. Stigma 



bifid, pilose. Capsule globose, subdidymous, crowned, 2- 

 celled, 4-valved : cells 2-seeded. Seed obovate, tubercular. 



196 STS'LIA. Teeth of calyx 2, subulate. Corolla funnel- 

 shaped, with a slender tube, and a 4-lobed acute limb. Stamens 4, . 

 exserted. Stigma 2-lobed. Capsule crowned, membranous, 2- 

 celled, 2-valved : dissepiment entire, permanent. 



197 TESSIE V RA. Limb of calyx 4-lobed: lobes unequal. 

 Corolla funnel-shaped, with a glabrous throat, and a 4-lobed 

 limb. Stamens exserted a little. Stigma 2-lobed? Capsule 

 crowned, 2-celled, 2-valved ; dissepiment entire, deciduous. 



198 GAILLONIA. Limb of calyx 5-7-toothed ; teeth unequal. 

 Corolla funnel-shaped, with a terete tube, and a 5-7-lobed 

 limb. Stamens 5-7, exserted from the throat. Style filiform ; 

 stigma 2-lobed. Fruit ovoid, containing 2 separable indehiscent 

 nuts. 



199 MACHAONIA. Limb of calyx small, 5-parted. Corolla 

 funnel-shaped, 5-cleft, with a short tube, and a villous throat. 

 Stamens 5, inserted in the throat ; anthers subcordate, exserted. 

 Stigma bipartite. Capsule somewhat tetragonal, crowned, con- 

 taining 2 1-seeded indehiscent nuts, which are fixed to the top 

 of a linear axis. Shrubs or trees. 



