164 



ASCLEPIADE.E. LXXXV. GYMNANTHERA. LXXXVI. CRYPTOSTEGIA. LOGANIACE^E. 



downy on the back, lying upon the stigma ; polliniferous pedi- 

 cels 10, linear, horny, dehiscing outwardly, erect, propped by 

 corpuscles at the base, and applied to the furrows of the stigma ; 

 pollen granular. Stigma 5-angled, and having 5 deep furrows. 

 Ovarium didymous. Style one, thick A twining shrub, with 

 opposite, elliptic-oblong, acutish, veiny, glabrous leaves, which 

 are paler beneath. Peduncles interpetiolar, bifid. This genus 

 differs from Periploca in the anthers being sessile and inclosed, 

 and from the number and singular form of the polliniferous 

 pedicels. 



1 L. JAVA'NICUM (Blum, bijdr. 1049.) Jj . ^. S. Native of 

 Java, about Kuripan. 



Java Leposma. Fl. May, Ju. Shrub tw. 



Cult. For culture and propagation see Pergularia, p. 133. 



LXXXV. GYMNANTHE'RA (from yvpvo^gymnos, naked; 

 and avSripa, anthera, an anther ; in reference to the anthers 

 being beardless.) R. Br. in mem. wern. soc. 1. p. 58. 



LIN. SYST. Pentdndria, Dygynia. Corolla salver-shaped. 

 Corona faucis 5-leaved. Filaments distinct, inserted in the 

 throat of the corolla ; anthers beardless ; pollen masses applied 

 by fours to the dilated tops of the corpuscles of the stigma. 

 Stigma apiculated, bifid. Follicles cylindrical, smooth, divari- 

 cate. Seeds comose. A twining, glabrous shrub. Leaves 

 opposite, shining. Peduncles lateral, sub-dichotomous. Flowers 

 whitish green, beardless. 



1 G. NITIDA (R. Br. prod. 464.) T; . ^. S. Native of New 

 Holland, within the tropic. Scales 5, cut, inserted inside the 

 calyx, under its sinuses. Albumen none. 



Shining-]eaved Gymnanthera. Shrub twining. 



Cult. For culture and propagation see Pergularia, p. 133. 



LXXXVI. CRYPTOSTE'GIA (from /cpv^roe, cryptos, con- 

 cealed ; and <rryw, stego, to cover ; in reference to the scales 

 in the throat covering the anthers.) R. Br. in bot. reg. 435. 

 Wight, and Arnott, contrib. ind. bot. p. 65. 



LIN. SYST. Pentdndria, Digynia. Calyx 5-parted ; segments 

 elongated, lanceolate, with undulated margins. Corolla campa- 

 nulately funnel-shaped ; tube furnished with 5 inclosed, narrow 

 bipartite scales inside, which cover the anthers, being opposite 

 them ; segments of the scales subulate. Stamens inclosed. 

 Filaments distinct, very short, inserted in the bottom of the 

 tube ; anthers inclosed, adhering by the base to the margin of 

 the stigma ; pollen masses solitary, composed of many free 

 granules heaped together, glued at first, but at length applied to 

 the spatulate appendicula of each corpuscle. Stigma globosely 

 conical, obscurely bi-apiculate. Follicles divaricate, acutely 

 triquetrous, with a bluntly-attenuated incurved apex. A 

 twining, glabrous, lactescent shrub. Leaves opposite, on short 

 petioles, elliptic, bluntly-acuminated, shining on both surfaces, 

 minutely-reticulated with brown beneath. Corymbs trichoto- 

 mous, terminal. Flowers large, showy, reddish purple. Corolla 

 twisted in. aestivation. 



1 C. GRANDIFLORA (R. Br. 1. c.) fj . '"X S. Native of the East 

 Indies, but the particular locality is unknown. Wall. cat. no. 

 1635. Wight, cat. no. 1660. Nerium grandiflorum, Roxb.il. 

 ind. 2. p. 10. mus. ind. orient, t. 1957. 



Great-flowered Cryptostegia. Fl. July, Aug. Clt. 1824. 

 Shrub tw. 



Cult. For culture and propagation see Pergularia, p. 133. 



ORDER CLIV. LOGANIA'CE^l (this order only contains 

 plants agreeing with the genus Logania in important characters). 

 Loganieae, R. Br. ex Mart. nov. gen. bras. 1. p. 203. Gen- 

 tianeae, sect. III. Capsula bipartibilis, R. Br. prod. p. 455. 



Flowers of equal parts. Calyx free, 5-parted. Limb of 

 corolla equal or unequal, convolute in aestivation. Stamens 5 

 or 1, rising from the corolla; pollen vittately 3-lobed (in Pa- 

 gamea). Stigma simple. Fruit a 2-celled, bipartible capsule; 

 having placenta adnate on both sides to the segment of the ven- 

 tral suture, many-seeded ; or a drupe, containing 1-2 1-2-seeded 

 pyrenae. Albumen fleshy or cartilaginous. Embryo straight. 

 Herbs, shrubs, or trees. Leaves opposite, quite entire, usually 

 stipulate. Stipulas combined into intrapetiolar sheaths. Flowers 

 racemose, corymbose, or solitary, usually white. 



This order is distinguished from Genlianeee in the capsule 

 being divisible into 2 1 -celled parts or drupaceous, in the pla- 

 centation of the seeds, in the aestivation of the corolla, in the 

 stipulate leaves, and in the fleshy or cartilaginous albumen, &c. 



Synopsis of the genera. 



1 LOGA'NIA. Calyx 5-cleft. Corolla subcampanulate, with 

 a villous throat. Stamens 5, shorter than the limb of the 

 corolla. Stigma capitate. Capsule bipartible. Seeds peltate. 



2 GENIOSTOMA. Calyx 5-parted. Corolla subcampanulate, 

 with a bearded throat. Stamens 5, shorter than the limb. 

 Stigma thick, obtuse or didymous. Capsule bipartible. Seeds 

 angular. 



3 USTE'RIA. Calyx 4-cleft, one of the segments large. 

 Corolla salver-shaped. Stamen 1. Capsule bipartible. Seeds 

 with winged edges. 



4 PAGA'MEA. Calyx 4-toothed. Corolla urceolate, villous 

 inside. Anthers 4, nearly sessile, inclosed. Style bifid from the 

 base. Drupe 2-celled ; each cell containing a 2-celled, 2-seeded 

 pyrenae. 



5 GRTNE % RA. Calyx 5-toothed. Corolla funnel-shaped. 

 Stamens 5, inclosed. Style exserted, bifid. Berry drupaceous, 

 containing 2 pyrenae. 



6 LABORDIA. Calyx 5-cleft. Corolla funnel-shaped. Sta- 

 mens 5, inclosed. Style inclosed, thick. Stigma conical, trian- 

 gular. Fruit capsular, 3-celled. 



7 CODONA'NTHUS. Calyx 5-cleft, ciliated. Corolla campa- 

 nulately urceolate. Stamens 5, inclosed. Style bifid. Stigmas 

 round. Fruit unknown. 



8 ANABA'TA. Calyx small, entire. Corolla campanulate. 

 Anthers 5, sessile. Style exserted. Stigma simple. Fruit un- 

 known. 



I. LOGA'NIA (in memory of James Logan, author of Ex- 

 perimenta de Plantarum Generatione. 8vo. London, 1747.). 

 R. Br. prjd. 1. p. 455. Ray. steudt. 1. t. 2. gen. 1. p. 151. 

 Euosma, Andr. bot. rep. 520. E'xacum, Labill. nov. holl. 1. 

 t. 51. 



LIN. SYST. Pentandria, Monogynia. Calyx 5-parted. Co- 

 rolla subcampanulate ; with a rather villous throat ; and a 5- 

 parted limb. Stamens 5, shorter than the limb. Style 1, 

 permanent ; stigma clavately capitate. Capsule bipartible. 

 Placenta adnate on both sides to the segment of the ventral 

 suture, at length free, many-seeded. Seeds peltate. Shrubs 

 or herbs. Leaves quite entire, usually stipulate, sometimes 

 exstipulate. Stipulas when present intrapetiolar or lateral, dis- 

 tinct, or combined into a sheath. Flowers terminal or axil- 



