RUBIACEjE. CLXXI. PSYCHOTRIA. 



585 



herbs, natives within the tropics. Leaves opposite, petiolate. 

 Stipulas variable. Peduncles sometimes axillary, but usually 

 terminal. Flowers disposed in panicles or corymbs, rarely tetra- 

 merous, but almost always pentamerous ; sometimes, however, 

 there are tetramerous and pentamerous flowers to be found at 

 the same time, and' on the same plant. The species are very 

 numerous and truly intricate, therefore difficult to define. 



1. Peduncles axillary.- Perhaps all the species belonging to 

 the present section belong to the genus Ronabea. 



* Species natives of South America. 



IP.? EXCE'LSA (H. B. et Kunth, nov. gen. amer. 3. p. 355. 

 t. 281.) arboreous; branclilets terete, downy; leaves oblong, 

 acuminated, narrowed at the base, membranous, glabrous ; stipu- 

 las deciduous ; peduncles axillary, few-flowered ; flowers tetra- 

 merous and tetrandrousi Tj . S. Native of Mexico, near Xa- 

 lappa. Corolla white, glabrous : with the lobes oblong, and 

 longer than the tube. Drupe globose, red, 2-celled ; cells 1 -seed- 

 ed ; ovula erect. 



Tall Psychotria. Tree tall. 



2 P. ? EME'TICA (Mutis, in Lin. fil. suppl. p. 144. exclusive of 

 the synonymes of Marcgrave and Piso,) plant suffruticose, erect, 

 simple, pilosely tomentose ; leaves oblong, acuminated, narrowed 

 at the base, membranous, ciliated, rather pilose beneath ; stipu- 

 las ovate, acuminated, very short ; peduncles axillary, few- 

 flowered, subracemose. T? . S. Native of New Granada, near 

 Nares on the banks of the Magdalena, and in the province of 

 Girone. H. B. et Kunth, nov. gen. amer. 3. p. 355. Humb. et 

 Bonpl. pi. equin. 2. p. 142. t. 126. Cephae'lis emetica, Pers. 

 encli. 1. p. 203. Ipecacuanha noir, Rich. diet. sc. med. 20. p. 

 4. with a figure. Ipecacuanha, fl. med. 4. f. 201. Flowers 

 white. Berries bluish, ovate-globose, smooth, not furrowed ; 

 hence it is probably a species of Ronabea. Throat of corolla 

 closed by villi. Root perpendicular, knotted, branched, emetic, 

 with a slender axis and thick friable bark ; and is the ipecacuanha 

 supplied by Spanish America, but not that supplied by Brazil, 

 which is Cephaflis Ipecacuanha. 



Emetic Psychotria or Spanish American Ipecacuanha. Sh. 1 

 to 1-J foot. 



3 P. HI'RTA (Willd. in Rcem. et Schultes, syst. 5. p. 191.) 

 branches, peduncles, petioles, and under side of leaves hairy ; 

 leaves obovate-oblong, acuminated at both ends ; stipulas ovate, 

 obtuse ; peduncles axillary, 3-flowered. fj . S. Native of New 

 Granada, on Mount Quinditi. The rest unknown. Perhaps a 

 variety of P. rufescens. 



Hairy Psychotria. Shrub. 



4 P. MACROPHY'LLA (Ruiz et Pav. fl. per. 2. p. 56. t. 202. f. 

 a.) plant herbaceous, glabrous ; branches terete ; leaves oval- 

 lanceolate, acuminated, large, membranous ; stipulas broad-ovate, 

 unidentate, short-acuminated ; panicles axillary, on short pe- 

 duncles, with opposite dichotomous branches ; fruit oval. If. . S. 

 Native of Peru, in forests on the Andes. Flowers small, sessile, 

 white. Fruit of an obscure violaceous colour. Leaves a foot 

 long. Stipulas beset with glands inside at the base. 



Long-leaved Psychotria. PI. 7 to 8 feet. 



5 P. WILLDENOWII (D. C. prod. 4. p. 505.) leaves oblong, 

 attenuated at the base and apex, petiolate, coriaceous, shining, 

 downy beneath ; stipulas 2-lobed ; panicles axillary, very short, 

 sessile. fj . S. Native of South America. P. magnolisefolia, 

 Rcem. et Schultes, syst. 5. p. 190. P. floribunda var. Spreng. 



Willdenow's Psychotria. Shrub. 



C P. ULIGINOSA (Swartz, prod. p. 43. fl. ind. occ. p. 421.) 

 plant subherbaceous, simple, erect, glabrous ; leaves lanceolate- 

 oblong, acuminated, shining; stipulas connate, acute, convex; 

 cymes pedunculate, tripartite, opposite in the axils of the upper 



VOL. III. 



leaves ; flowers sessile ; corolla with a villous throat ; berries 

 spherical ; seeds crested on the outside. Ij . S. Native of Ja- 

 maica, in low rather humid parts of the mountains. P. Browne, 

 jam. p. 160. no. 1. ? Root long, creeping. Berries scarlet, 

 compressed in the dried state. Flowers pale red. 

 Bog Psychotria. PI. 2 to 3 feet. 



7 P. LJE'VIS (D. C. prod. 4. p. 505.) glabrous ; leaves oval, 

 acute at the base, and ending in a short cuspidate point at the 

 apex, smooth above, almost nerveless ; stipulas thick, with 

 a reflexed acumen ; peduncles axillary, compressed, shorter 

 than the leaves, trifid at the apex, and each of the branchlets 

 bearing crowded sessile flowers ; fruit nearly globose, not 

 crowned. Tj . S. Native of Porto-Rico, where it was collected 

 by Bertero. P. Phytolacca, Spreng. in herb. Balb, and probably 

 ofPoir. Seeds compressed. Ribs of fruit thick, distant. 



Smooth Psychotria. Shrub. 



8 P. HOOKE'RI; shrubby, glabrous; branches tetragonal; 

 leaves lanceolate, tapering into the short petioles, coriaceously 

 membranous, with finely reflexed margins, pale and reticulated 

 beneath ; stipulas oval, acute, deciduous ; peduncles axillary, 

 short ; flowers on short pedicels, bracteate at the base ; bracteas 

 small, convolute, toothed ; flowers dioecious ; fruit oval, crowned 

 by the limb of the calyx, which is tubular, and minutely 5-toothed 

 at the apex, fj . G. Native of Juan Fernandez. Hippotis 

 triflora, Bertero, in ann. des scienc. nat. 21. p. 348. but not of 

 R. and Pav. P. ? triflora, Hook, et Am. in bot. misc. 3. p. 

 359. but not of Schum. Fruit a drupaceous berry, nearly half 

 an inch long, inclosing 2 chartaceous pyrense. 



Hooker's Psychotria. Shrub 3 to 5 feet. 



9 P. ? PYKIFO'LIA (Hook, et Arn. in bot. misc. 3. p. 360.) 

 arboreous, glabrous ; branches obscurely tetragonal ; leaves, 

 broad-ovate or oblong, on long petioles, with erosely sinuated 

 finely reflexed margins, coriaceously membranous, paler beneath 

 and reticulated ; stipulas broad-ovate, acute, deciduous ; pe- 

 duncles axillary, 3-flowered ; drupe turbinate, crowned by the 

 erect acuminated teeth of the calyx. f? . G. Native of Juan 

 Fernandez, where it is called Peralillo according to Bertero. 

 Hippotis pyrifolia, Bertero, mss. Bertero thinks it may only 

 be a variety of the preceding species, but it is much larger ; 

 he did not meet with the flower ; but if its structure prove 

 to be the same as the other, both merit being raised to the rank 

 of a genus according to Arnott. 



Pear-leaved Psychotria. Shrub 4 to 6 feet. 



10 P. AGNA'TA (D. C. prod. 4. p. 505.) leaves narrow, oblong, 

 attenuated at both ends, shining above, hairy beneath, and 

 bearded on the mid-rib on both surfaces ; stipulas acutely biden- 

 tate ; peduncles axillary, corymbose at the apex, downy ; flowers 

 crowded on the tops of the branches of the peduncles ; fruit 

 nearly globose. Jj . S. Native of St. Domingo. Nerves of 

 leaves yellowish. Leaves and branchlets crowded. Flowers 

 downy outside when young. Berries glabrous. Perhaps suffi- 

 ciently distinct from the next species. 



Kindred Psychotria. Shrub. 



IIP. NEURO'TRICHA (D. C. 1. c.) leaves elliptic-oblong, acu- 

 minated at both ends, glabrous, except the middle nerve, which 

 is beset with a series of hairs on both surfaces ; stipulas acutely 

 bidentate, permanent ; panicles axillary, rather deflexed, race- 

 mose, and rather pilose ; flowers sessile, crowded on the tops of 

 the lateral short branches of the panicle ; fruit subobovate. Jj . S. 

 Native of Porto-Rico. Bracteas broad, ovate, permanent, under 

 the flowers. Berries glabrous. Flowers unknown. 



Hairy-nerved-leaved Psychotria. Shrub. 



** Species natives of Africa. 



12 P. TRIFLORA (Schum. pi. guin. p. 108.) shrubby ; branches 

 brachiate ; branchlets rather tetragonal, pilose ; leaves ovate, 

 4 F 



