650 



GESNERIACE^E. IV. RYTIDOI>HYLI,UM. V. CONRADIA. 



ers, and only a single stem in a pot, or it will not grow strong 

 enough to flower. The rest of the species flower freely, and 

 strike readily from cuttings. The leaves of G. speciosa, and 

 probably of most others, if taken ofF close to the stem, and 

 planted, will strike root, and make each a plant. 



Subtribe II. 



CoNRADiE 1 * (this section agrees with Conradia in the cha- 

 racter given below.) Calyx adnate to the ovarium. Corolla 

 superior. Leaves alternate or scattered, not opposite, as in the 

 last section. 



IV. RYTIDOPHY'LLUM (from fivnc pvnSos, rytis rytidos, 

 a wrinkle; and <t>v\\oi>, phyllon, a leaf; leaves blistered.) 

 Mart. nov. gen. bras. 3. p. 38. Gesneria species, Lin. and 

 Swartz. 



LIN. SYST. Didynamia, Angiospermia. Calyx wholly ad- 

 nate to the ovarium ; limb 5-toothed or 5-cleft. Corolla supe- 

 rior, campanulate, constricted in the middle ; limb 5-lobed. 

 Stamens 4, didynamous, with the rudiment of a fifth behind ; 

 anthers free or anisogeneous, and cohering. Disk epigynous, 

 thick, annular, sinuous. Capsule dry, combined with the some- 

 what 5-ribbed calyx ; top flat, 2-valved ; placentas 2, parietal, 

 many-seeded. Small trees and shrubs, with fibrous roots. 

 Branches alternate and scattered, hairy. Leaves stipulate, on 

 short petioles, scattered, very hairy beneath ; the parenchyma 

 in the upper surface elevated into small blisters, each bearing a 

 hair at apex. Flowers cymose, on peduncles which rise from 

 the axils of the superior leaves, green, of one colour, or spotted 

 with blood-colour, or wholly blood-coloured. 



1 R. TOMENTOSUM (Mart. 1. c. p. 39.) branches hairy ; sti- 

 pulas roundish, revolute, crenated, tomentose ; leaves oblong, 

 acuminated, narrowed at both ends, serrated, reticulated, and 

 clothed with hoary pubescence beneath, and papillosely rough 

 above -, corymbs axillary, on long peduncles ; calyx villous, 

 with a 5-parted equal limb. I? . S. Native of tropical Ame- 

 rica, on the banks of rivers and rivulets. Gesneria tomentosa, 

 Lin. spec. 851. Mill. diet. no. 1. Jacq. amer. 179. t. 175. 

 f. 64. pict. 89. t. 261. f. 2. Sims. bot. mag. 1023. Codono- 

 phora lanceolata, Lindl. Sloane, hist. 1. p. 162. t. 104. f. 2. 

 Corollas spotted with yellow and dark purple. What is Ges- 

 neria tomentosa, H. B. et Kunth, nov. gen. 2. p. 396, which is 

 described as a herbaceous plant, with a fusiform root, a simple 

 procumbent stem, and opposite leaves. 



Tomentose Rytidophyllum. Clt. 1759. Shrub 2 to 4 feet. 



2 R. GRA'NDE (Mart. 1. c.) branches hairy ; leaves broad- 

 lanceolate, very long, denticulated, hairy, scabrous above, petio- 

 late ; peduncles long, terminal and axillary, dichotomous ; pedi- 

 cels usually 3-flowered ; segments of calyx acute, equal. Tj . S. 

 Native of Jamaica, on the mountains. Gesneria grandis, Swartz. 

 prod. 89. fl. ind. occ. 2. p. 1018. Leaves scabrous and white 

 beneath. Flowers large, greenish-yellow. Corolla irregular, 

 dilated at the base ; limb ventricose towards the top ; upper 

 lip large, arched, bifid. 



Great Rytidophyllum. Shrub 6 to 15 feet. 



3 R. BERTEROA'NUM (Mart. 1. c.) branches densely hairy; 

 stipulas subulate ; leaves lanceolate, acuminated at both ends, 

 doubly toothed, scabrous from hairs beneath, and papillosely 

 rough above ; calyx villous, with setaceously elongated seg- 

 ments. Pj . S. Native of the island of St. Domingo, on 

 rocks. Gesneria scabra, Spreng. syst. 2. p. 838. but not of 

 Swartz. 



Berteros Rytidophyllum. Shrub. 



Cult. This is a beautiful genus, like the rest of the present 



order. A light rich earth, vegetable mould, or a mixture of 

 loam, sand, and peat, is good soil for the species ; and cuttings 

 strike root readily in heat. 



V. CONRA'DIA (named after Conrad Gesner, see Gesneria.) 

 Mart. nov. gen. bras. 3. p. 38. Gesneria species, Plum, and 

 Swartz. 



LIN. SYST. Didynamia, Angiospermia. Calyx wholly adnate 

 to the ovarium ; limb 5-cleft or 5-toothed, free. Corolla supe- 

 rior, tubular or campanulate ; limb somewhat equally 5-cleft. 

 Stamens 4, didynamous, with the rudiment of a fifth behind ; 

 anthers usually cohering into a round head. Glands or disk 

 wanting. Capsule dry, clothed with a 5 or 10-ribbed calyx, 

 flat on the top, 2-valved; placentas 2, parietal, many-seeded. 

 Seeds scobiform. Shrubs, rarely herbs, with fibrous roots. 

 Branches alternate or scattered. Leaves petiolate, alternate, or 

 scattered, towards the tops of the branches, rough from stifllsh 

 white hairs, particularly on the nerves and veins, rarely glabrous, 

 usually toothed. Flowers disposed in few-flowered cymes, on 

 peduncles which rise from the axils of the upper leaves, red or 

 green, spotted with blood-colour, white or pale. 



SECT. I. SYNANTHE'RA (from o-vv, syn, together ; and 

 anthera, an anther.) Stamens inclosed. Anthers all connected 

 into a round head. 



1 C. HU'MILIS (Mart. 1. c.) leaves lanceolate, serrated, sessile ; 

 peduncles dichotomous, 3-7-flowered, very long ; calyx campa- 

 nulate, 5-toothed ; corolla campanulate, irregular. Tj . S. Na- 

 tive of Tropical America, and the West Indies. G. humilis, 

 Lin. spec. 850. G. humilis flore flavescente, Plum. gen. 27. 

 icon. 133. f. 2. Corolla yellowish green, with dark spots 

 within. 



Humble Conradia. Shrub 2 feet. 



2 C. CRANIOLA'RIA (Mart. 1. c.) leaves cuneate-obovate, acute, 

 sub-runcinate, toothed, glabrous above, and hairy beneath; calyx 

 downy, with linear lanceolate, reflexed segments ; corolla cam- 

 panulate ; limb nearly regular. I? . S. Native of Hispaniola, 

 among broken rocks on the mountains. Gesnera craniolaria, 

 Swartz, prod. 89. fl. ind. occ. 2. p. 1015. Craniolaria fruticosa, 

 Lin. spec. 861. Plum. gen. 27. icon. t. 137. Leaves 4-6 

 inches long. Corolla green outside, hairy, and dark purple. 

 Margins of the segments of the lower lip of corolla laciniately 

 jagged. 



Craniolaria-like Conradia. Shrub 3 to 4 feet. 



3 C. SCA'BRA (Mart. 1. c.) leaves ovate-lanceolate, serrated, 

 scabrous ; calvx scabrous, with ovate, acute, blood-coloured seg- 

 ments ; corolla incurved, cylindrical : limb nearly equal, f; . S. 

 Native of Jamaica, on calcareous rocks. Gesneria scabra, 

 Swartz, prod. 89. fl. ind. occ. 2. p. 1020. Leaves petiolate, 

 scabrous above, wrinkled, hispid, and hoary beneath. Corolla 

 small, blood red. 



Scabrous Conradia. Shrub 2 to 4 feet. 



SECT. II. DITTANTHE'RA (from SITTOQ, dittos, twin ; and 

 avOnpa, anthera, an anther.) Stamens exserted ; anthers con- 

 nected by pairs. 



4 C. VENTRICOSA (Mart. 1. c.) leaves elliptic, acuminated, 

 crenated, glabrous ; peduncles usually 4-flowered ; calycine 

 segments subulate, elongated ; corolla cylindrical, incurved : 

 segments of the lower lip crenately ciliated. Ij . S. Native of 

 Jamaica, Martinique. Gesneria ventricosa, Swartz, prod. p. 90. 

 fl. ind. occ. 2. p. 1028. Pentaraphia longiflora, Lindl. Leaves 



