196 



GENTIANE^E. XVI. SELATIUM. XVII. ULOSTOMA. XVIII. SCHULTESIA. 



XVI. SELATIUM (from <re\ac, selas, glittering: deep 

 colour of the flowers). D. Don, mss. Gentiana, Ruiz et Pav. 

 in herb. Lamb. 



LIN. SYST. Pentdndrla, Digynia. Calyx semi-5-parted, mem- 

 branous, with linear, acute, flat, erect segments. Corolla 

 tubular, 5-lobed. Stamens 5, adnate to the base of the corolla ; 

 filaments dilated, flat, attenuated at apex ; anthers incumbent. 

 Ovarium fusiform, stipitate. Style very short ; stigma 2-lobed : 

 lobes flat, cuneate, dilated. Placentas 2 ; one-half shorter than 



the ovaria Perennial plants. Leaves opposite, sessile, veinless, 



with scabrous edges. Flowers terminal, subracemose, drooping. 



1 S. COCCINEUM (D. Don, mss.) stems terete, ascending, 

 branched, leafy ; leaves linear-lanceolate, acute, veinless ; flowers 

 subracemose, drooping ; corolla twice longer than the calyx. 

 1.F. Native of Peru. Gentiana coccinea, Ruiz et Pav. Leaves 

 hardly an inch long, with roughish edges. Calycine segments 

 ovate-lanceolate, acute. Corollas scarlet. Filaments channelled ; 

 anthers oblong. Ovarium oblong. Style hardly any. 



Scarlet-fiowered Selatium. PI. to 1 foot. 



2 S. FOLIOSUM (D. Don, mss.) stem terete, simple, erect, 

 leafy ; leaves linear, acute ; calycine segments linear, acute, 

 erect, length of corolla; flowers terminal, fascicled, erect; 

 filaments flat, dilated. y.. F. Native of Peru, on the Cor- 

 dilleras. Stem the thickness of a writing-quill. Leaves crowded 

 in an interrupted manner, glabrous, 2 inches long, with scabrous 

 edges : radical ones aggregate. Lobes of corolla ovate, acute. 

 Pedicels bractless. Ovarium fusiform. 



Leafy Selatium. PI. \ foot. 



3 S. ASSU'RGENS (D. Don, mss.) stem assurgent, terete ; 

 leaves lanceolate, bluntish, 3-nerved, with scabrous edges ; 

 flowers terminal, in heaps ; peduncles bibracteate ; corolla twice 

 the length of the calyx, with ovate-lanceolate segments. T. F. 

 Native of Guayaquil. Stem thickness of a writing quill. Leaves 

 \\ to 2 inches long. Pedicels filiform. Corollas yellow. 



Assurgent Selatium. PI. J foot. 



4 S. THYRsoiDEA ; stem simple, strong ; leaves long, linear, 

 acute ; flowers aggregate, axillary, forming altogether a dense 

 raceme ; corolla campanulate, hardly exceeding the calyx. Tf. . H. 

 F. Native of Peru, at Huay-Huay, near Pasco. Gentiana 

 thyrsoidea, Hook, bot. misc. 2. p. 227. Root fusiform. Stem 

 naked at top. Leaves 3-4 inches long. Flowers numerous. 

 Anthers oblong, a little longer than the filaments. The plant 

 turns black on drying. 



Thyrsoid-fiovrereA Selatium. PI. 1 foot. 



5 S. INCU'RVUM ; stem naked at bottom and leafy at top ; 

 leaves elliptic, acute, 3-nerved ; flowers axillary, aggregate at the 

 top of the stem ; corolla obovate, twice as long as the calyx : with 

 obtuse incurved segments. 11 . F. Native of Peru, along with 

 the preceding. Gentiana incurva, Hook, bot. misc. 2. p. 228. 

 Corollas an inch long, yellow. 



/ncwuerf-flowered Selatium. PI. |. foot. 



6 S. ATTENUA'TUM (D. Don. mss.) stem erect, terete ; leaves 

 linear-lanceolate, acuminated, many-nerved ; peduncles angular, 

 elongated, umbellate, bractless ; calycine segments ovate-lanceo- 

 late ; corolla tubular : lobes roundish ; seeds roundish. 7.F. 

 Native of Peru. Leaves li to 2 inches long, with scabrous 

 edges. Pedicels slender, 4 to 5 together, in an umbel. Filaments 

 dilated, channelled. Ovarium oblong. Stigma capitate, 2-lobed, 

 pruinose. 



Attenuated Selatium. PI. 1 foot. 



7 S. DIFFU'SUM (D. Don, mss.) stem filiform, branched, dif- 

 fuse, terete ; leaves lanceolate, acute, 3-nerved, attenuated at 

 the base, petiolate ; peduncles usually by threes, angular, ter- 

 minal ; calycine segments ovate-lanceolate, acute ; corolla 

 rotate : with oblong, obovate, mucronate segments. I/ . F. Native 

 of Peru, at Talcahuano. Root fusiform. Leaves subpetiolate, 



with scabrous edges. Filaments subulate. Anthers and ovarium 

 oblong. Stigma sessile, 2-lobed, pruinose. 



Diffuse Selatium. PI. foot. 



8 S. MULTICAU'LIS (D. Don, mss.) stems numerous, ascending, 

 tufted, filiform ; radical leaves petiolate, spatulate : cauline ones 

 linear-lanceolate, acutish ; peduncles usually solitary, terminal ; 

 calyx turbinate : with lanceolate, mucronate segments ; corolla 

 funnel-shaped, deeply 5-cleft : lobes elliptic, obtuse, connivent. 

 7/ . F. Native of Peru, Ruiz et Pav. Root long. Plant tufted. 

 Radical leaves crowded, all scabrous on the edges. Corolla pale 

 lilac, twice longer than the calyx. Filaments dilated at bottom. 

 Ovarium fusiform ; stigma sessile, 2-lobed. 



Many -stemmed Selatium. PI. tufted. 



Cult. For culture and propagation see Eudoxia, p. 202. 



XVII. ULO'STOMA (meaning unknown to us) D. Don. 

 mss. Gentiana species, Ruiz et Pav. in herb. Lamb. 



LIN. SYST. Pentdndria, Digynia. Calyx 5-parted : with 

 ovate-lanceolate, acute segments. Corolla funnel-shaped, twice 

 longer than the calyx ; limb 5-parted ; tube bearded with long 

 hairs inside. Stamens 5 ; filaments dilated, attenuated at the 

 apex ; anthers incumbent. Ovarium fusiform. Stigma sessile, 

 2-lobed. A perennial, herbaceous, tufted plant. Stems leafy, 

 terete, erect. Leaves opposite, decussate, sessile, linear-lan- 

 ceolate, acute, obscurely 3-nerved, with scabrous margins ; 

 radical ones aggregate. Flowers umbellate, white. ? 



1 U. riLAMENibsA (D. Don, mss.) "U.. F. Native of Peru. 



Thready Ulostoma. PI. tufted, % foot. 



Cult. For culture and propagation see Eudoxia, p. 202. 



XVIII. SCHULTE'SI A (named in honour of Joseph Augustus 

 Schultes, M.D. Professor of Botany at Landshut ; author of 

 Systema Vegetabilium.) Mart. nov. gen. 2. p. 103. 



LIN. SYST. Tetrdndriti, Monogynia. Calyx tubular, 4-cleft, 

 4-winged ; wings running out into erect subulate segments. 

 Corolla salver-shaped ; with an equal tube, a quadrifid limb, and 

 naked throat. Stamens 4 ; filaments filiform : anthers erect, 

 unchangeable in the dried state. Stigma bilamellate. Capsule 

 1 -celled, 2-valved, many-seeded ; seeds small, angular. 

 Slender, glabrous herbs. Stems tetragonal, simple or forked. 

 Leaves sessile, opposite, decussate, lanceolate or linear. Flowers 

 terminal, or in the forks. Pedicels continuous with the calyx. 

 Corollas fine rose-coloured or yellow. 



1 S. CRENULIFLORA (Mart. 1. c. p. 104. t. 180.) stem erect, 

 branched ; leaves ovate-lanceolate, acute ; flowers nearly sessile ; 

 wings of calyx broad, half-ovate; segments of corolla nearly 

 orbicular, finely crenulated. Q. S. Native of Brazil, in the 

 province of Bahia, in alpine, schistous places, near Villa do Rio 

 de Contas. Corolla fine yellow, an inch long. Branches 1-2- 

 flowered. 



Notch-flowered Schultesia. PL 1 3- foot. 



2 S. GRA'CILIS (Mart. 1. c. p. 105. t. 181.) stem straight, 

 simple, or simply branched ; leaves thin, erectish, acute : lower 

 ones ovate-lanceolate : upper ones narrow-lanceolate ; flowers 

 solitary, on long peduncles, erect or drooping ; wings of calyx 

 narrow ; segments of corolla almost square, spreading. Q . S. 

 Native of Brazil, in the mine provinces, in mountain fields. Co- 

 rolla rose-coloured ; tube yellowish at the base. 



Slender Schultesia. PI. ^ to 1 foot. 



3 S. AUBLE'TII ; stem straight, simple, or a little branched ; 

 leaves lanceolate, attenuated, the lower ones shorter and acute ; 

 flowers solitary, terminal or axillary, on short peduncles ; wings 

 of calyx broad ; segments of corolla obtuse, undulated, crenu- 

 lated. O-S. Native of Guiana, Cayenne, Maranham, Trinidad, &c. 

 E'xacum Guianense, Vahl. symb. 3. p. 16. Aubl. guian. 1. p. 



