306 CONVOLVULACE^E. XXXV. MOUROUCOA. RETZIACE^. I. RETZIA. II. LONCHOSTOMA. BORAGINE^. 



Cymose-fiowered Dodder. PI. parasitical. 



Cull. The species are all parasitical, or rather epiphytical 

 plants ; the hardy species grow very well on ivy, or any small 

 shrub. All the species may be grown by sowing the seeds in 

 at the side of any soft wooded plant. 



f It is not known whether the following genus belongs to the 

 present order. 



XXXV. MOUROUCO V A (die name of the genus in Guiana.) 

 Aubl. Guian. 1. p. 142. t. 54. Desr. in Lam. diet. 4. p. 337. 

 Lam. ill. t. 103. Juss. gen. 133. ed. Usteri. p. 148. 



LIN. SYST. Pentdndria, Monogynia. Calyx deeply 5-parted, 

 coloured ; segments approximate : outer ones the largest, vio- 

 laceous. Corolla funnel-shaped ; tube short ; segments of the 

 limb spreading, roundish. Stamens rising from the base of the 

 lobes, in the upper part of the tube ; filaments long, incurved. 

 Stigma thick, roundish, bilamellate. Capsule girded by the 

 calyx, 2-celled, ex Lain., 3-celled, ex Juss., ovate-oblong, coria- 

 ceous, fibrous; cells 1 -seeded.? Seeds large. A climbing 

 shrub, with stiff, elliptic, acute, glabrous leaves, and axillary, 

 fleshy, thick peduncles, bearing fascicles of flowers at their tops. 

 Corollas large, flat, blue. 



1 M. VIOLA'CEA (Aubl. 1. c.) Tj . *^. S. Native of Guiana, 

 in woods. Convolvulus macrospermus, Willd. spec. 1. p. 860. 

 Stem branched. Leaves entire, plicate ; petioles channelled 

 above. 



Fio/aceows-calyxed Murucoa. Shrub climbing or twining. 



Cult. For culture and propagation see Argyreia, p. 257. 



ORDER CLXV. RETZIA X CE, (this order contains plants 

 agreeing with Retzia in important characters.) Bartl. ex 

 Choisy, in mem. soc. phys. gen. 6. p. 400. 



Calyx bracteate, imbricate, deeply 5-parted. Corolla tubular, 

 cylindrical. Stamens inserted into the tube ; anthers subcor- 

 date. Stigmas 2, or bifid. Capsule 2-celled ; dissepiment pla- 

 centiferous on both sides ; cells many-seeded. Branched, erect, 

 shrubs. Leaves alternate, or 4 in a whorl. Flowers lateral, 

 sessile towards the extremities of the branches. This order dif- 

 fers from its allies in the cells of the capsule being many-seeded, 

 and in the dissepiment being placentiferous. 



Synopsis of the genera. 



1 RE'TZIA. Corolla villous. Style bifid. Cells of capsule 

 many- seeded. 



2 LONCHOSTOMA. Corolla glabrous. ? Styles 2. Cells of 

 capsule generally 10-seeded. 



I. RE'TZIA (so named by Thunberg, in honour of Anders 

 Johan Retzius, professor of natural history and economy, in the 

 university of Lund, in Sweden ; author of Observations Bota- 

 nicae, Lips, fol.) Thunb. act. lund. 1. p. 55. nov. gen. 4. 

 Lam. ill. t. 103. Schreb. gen. no. 285. Lin. suppl. 18. Juss. 

 gen. 133. ed. Usteri. p. 149. 



LIN. SYST. Pentdndria, Monogynia. Calyx 5-parted, un- 

 equal ; segments lanceolate. Corolla tubular, contracted under 

 the limb, villous inside and outside, 5-parted at apex ; limb 

 short ; segments or lobes obtuse, concave, very villous at apex. 

 Anthers subcordate. Stigma bifid, simple. Capsule oblong, 

 acute ; cells many-seeded. An erect, branched shrub. Leaves 

 4 in a whorl. Flowers bracteate, terminal, crowded. 



7 



1 R. SPICATA (Thunb. act. lund. 1. p. 55. t. 1. f. 2. Lam. 

 ill. t. 103. Lin. suppl. 138.) ^ G. Native of the Cape of 

 Good Hope, on the highest mountains. R. Cape nsis, Thunb. prod. 

 p. 34. Branches hairy. Leaves crowded, lanceolate-linear, ses- 

 sile, blunt, 1 -grooved above, with impressed dots, 2- grooved be- 

 neath. Flowers lateral towards the extremities of the branches, 

 sessile, crowded, upright, almost concealed among the leaves. 

 Bracteas acute, keeled, hairy, longer than the calyx. Corollas 

 rufescent. This plant bears a very great affinity with Convol- 

 vulus, and especially with Convolvulus cenotheroldes, which is 

 probably also a species of Retzia. 



Spicate-fiowered Retzia. Fl. May, June. Clt. ? Shrub 4 

 feet. 



2 R. ? CAMPANULOIDES (Spreng. syst. 1. p. 589.) glabrous, 

 erect ; stem herbaceous, branched ; leaves alternate, linear-lan- 

 ceolate, entire, erect ; flowers solitary, terminal, naked. If . G. 

 Native of the Cape of Good Hope. Polemonium campanu- 

 loides, Thunb. prod. p. 35. Lin. suppl. p. 139. Willd. spec. 

 1. p. 887. Stigma bifid. Said to resemble Campanula persici- 



fdlia. 



Campanula-like Retzia. PI. 2 to 3 feet. 



3 R. ROELLOIDES (Spreng. syst. 1. p. 589.) stems herbaceous, 

 villous ; leaves alternate, sessile, lanceolate, marginate, sca- 

 brous ; flowers axillary and terminal, sessile, y.. G. Native 

 of the Cape of Good Hope. Polemonium roelloides, Thunb. 

 prod. 1. p. 35. Lin. suppl. 139. Willd. spec. 1. p. 887. 



Roella-like Retzia. PI. 1 to 3 feet. 



Cult. Any light rich soil will answer this shrub, or a mix- 

 ture of peat, loam, and sand. Cuttings will strike root freely in 

 sand, under a hand-glass. 



II. LONCHO'STOMA (from Xoyx*?, lonche, a lance; and 

 oro^ua, stoma, a mouth ; in reference to the segments of the 

 corolla, which are lanceolate, and attenuated towards the throat 

 of the corolla.) Wikstr. in acad. holm. 1818. t. 10. Spreng. 

 gen. 1. p. 216. 



LIN. SYST. Pentdndria, Digynia. Calyx bracteate, imbri- 

 cate, 5-parted. Corolla tubular ; limb 5-parted ; segments 

 lanceolate, attenuated to the throat. Stamens 5, inserted in the 

 tube of the corolla. Styles 2. Capsule 2-celled, 2-valved ; 

 dissepiments placentiferous on both sides; cells generally 10- 

 seeded Shrubs, natives of the Cape of Good Hope, with alter- 

 nate leaves. Flowers spicate, terminal. 



1 L, OBTUSIFLORUM (Wikstr. 1. c.) leaves elliptic, hairy out- 

 side ; sepals and segments of corolla obtuse : styles subclavate, 

 inclosed. Tj . G. Native of the Cape of Good Hope. Passe- 

 rina pentandra, Thunb. prod. 1. p. 76. 



Blunt-Jlowered Lonchostoma. Shrub. 



2 L. ACUTIFLORUM (Wikstr. 1. c.) leaves ovate, pilose out- 

 side ; sepals and segments of corolla acute ; styles filiform, ex- 

 serted. b . G. Native of the Cape of Good Hope. 



Acute-flowered Lonchostoma. Shrub. 



Cult. For culture and propagation see Retzia above. 



ORDER CLXVI. BORAGI'NEjE (this order contains plants 

 agreeing with Borago in important characters.) Juss. gen. p. 

 130. ed. Usteri, p. 143. R. Br. prod. p. 492. Asperifoliae 

 Nuciferae, Lehm. asp. 



Calyx 5-parted, rarely 4-parted, permanent. Corolla hypo- 

 gynous, monopetalous, usually regular, 5-cleft, rarely 4-cleft, 

 imbricate in aestivation. Stamens epipetalous, equal in number 

 to the segments of the corolla, and alternating with them, rarely 

 more. Ovarium 4-parted, 4-seeded, or simple, 2-4-celled, with 



