806 



RUTACE.E. XLV. VEPRIS. XLVI. PTELEA. XLVII. BLACKBURNIA. 



branchlets smooth ; racemes axillary. Tj . S. Native of Brazil, 

 at Rio Grande. Scopolia venosa, Spreng. syst. app. p. 91. 



Ferny-leaved Toddalia. Shrub 6 feet. 



Cult. These shrubs thrive best in a mixture of loam, sand, 

 and peat ; and cuttings, planted in a pot of sand, will strike root 

 readily, if placed under a hand-glass, in heat. 



XLV. VETRIS (from vepres, a briar or bramble). Andr. 

 Juss. in mem. mus. 12. p. 509. t. 26. no. 41. Toddalia and 

 Scopolia, species of authors. 



LIN. SYST. Monce'cia, Octdndria. Flowers of separate sexes. 

 Calyx short, 4-parted. Petals 4, longer than the calyx, spread- 

 ing much. Male flowers. Stamens 8, 4 of which are opposite 

 the petals, and are shorter than the others, inserted around the 

 base of the gynophore, which bears the rudiments of 4 ovaries. 

 Female flowers. Ovary seated on a very short, gland-like, 8- 

 lobed gynophore, surrounded by 8 very minute scales, simple, 

 globose, fleshy, 4- celled, each cell containing 2 ovulse. Stigma 

 sessile, broad, convex, peltate, 4-lobed. Fruit fleshy, dotted, 

 4-furrowed, 4-celled ; cells 1-seeded. Seed egg-shaped, 2- 

 celled, one of which is abortive. Embryo a little arched. 

 Small trees, with alternate, trifoliate leaves ; leaflets entire, 

 quite smooth, reticulated, and full of pellucid dots. Flowers 

 panicled, terminal, male and female on different branches, but 

 not on different plants ? Petals in the bud convolute. 



1 V. LANCEOLA'TA ; leaflets lanceolate, acuminated, shining; 

 panicles terminal. T? . S. Native of the Mauritius. Toddalia 

 lanceolata, Lam. ill. no. 2760. Scopolia lanceolata, Spreng. syst. 

 1. p. 779. Flowers white. 



ZanceoZate-leaved Vepris. Shrub 6 feet. 



2 V. OBOVA'TA; leaflets obovate, bluntish ; petioles margined ; 

 panicle terminal, corymbose. Tj . S. Native of the Mauritius. 

 Toddalia paniculata, Lam. ill. t. 139. f. 2. Scopolia inermis, 

 Smith, icon. ined. 2. p. 34. Scop, paniculata, Spreng. syst. 1. 

 p. 779. V. inerme, Andr. Juss. 1. c. t. 26. no. 41. Flowers 

 white. 



Oiot-ate-leaved Vepris. Clt. 1824. Shrub 10 feet. 

 Cult. See Toddalia for cultivation and propagation. 



XLVI. PTE'LEA (TrrtXta, ptelea, the Greek name of the 

 elm, from TTTO.III, ptao, to fly ; in allusion to the winged fruit). 

 Lin. gen. no. 152. Lam. ill. t. 84. Gaert. fruct. 1. t. 40. 

 Kunth, gen. tereb. p. 23. D. C. prod. 2. p. 82. Andr. Juss. 

 in mem. mus. 12. p. 500. t. 26. no. 42. Bellucia, Adans. 



LIN. SYST. Monoecia, Tetra-Pentdndria. Flowers of se- 

 parate sexes. Calyx short, 4-5-parted. Petals 4-5, longer 

 than the calyx, spreading much. Male flowers. Stamens 4-5, 

 longer than the petals ; filaments thickened below and hairy, 

 inserted around the base of the gynophore, bearing an abortive 

 pistil, much shorter than the stamens. Female flowers. Sta- 

 mens 4-5, very short, bearing barren anthers. Ovary seated on 

 a convex gynophore, compressed, 2-3-celled, each cell containing 

 2 ovulse. Style short, terminated by a 2-3-lobed stigma. Fruit 

 compressed, indehiscent, samara-like, turgid, 2-3-celled, each 

 cell containing 1 seed expanded around into a membranous 

 netted orbicular wing. Seeds oblong. Embryo straight. 

 Shrubs with alternate, simple, ternate, or quinate leaves, full of 

 pellucid dots ; lateral leaflets unequal-sided. Flowers greenish- 

 white, corymbose ; cormybs compound, in axillary or terminal 

 panicles ; pedicels furnished with bracteas. Male flowers some- 

 times with 6 or 7 anthers ; stamens unequal. Female flowers 

 sometimes with a 3-celled ovary and a 3-lobed stigma. 



* Leaves trifoliate. 



1 P. TUIFOLIA'TA (Lin. spec. 173.) leaflets ovate, acute, mid- 

 dle one tapering much to the base ; flowers in corymbs, usually 



tetrandrous. fj . H. Native of North America, from New 

 York to Carolina in shady moist hedges, and on the edges of 

 woods among rocks. Flowers small, greenish-white in corym- 

 bose clusters. 



Far. ft, pentaphylla (D. C. prod. 2. p. 83.) leaflets 5. 



Var. y, pubescens (Pursh, fl. amer. sept, 1. p. 107.) leaves pu- 

 bescent. lj . H. Native of Pennsylvania. 



Shrubby Trefoil. Fl. June, July. Clt. 1704. Shrub 10 to 

 15 feet. 



2 P. PENTA'NDRA (Moc. et Sesse, fl. mex. icon. ined. D. C. 

 prod. 2. p. 83.) 'leaflets oval, on short stalks, tapering to both 

 ends; flowers panicled, pentandrous. Tj . G. Native of Mexico. 

 Flowers greenish-white. 



Pentandrous Shrubby Trefoil. Shrub 6 to 10 feet. 



3 P. PODOCA'RPA (D. C. prod. 2. p. 83.) leaflets ovate, blunt 

 at the base, sessile ; corymbs few-flowered ; fruit elliptical, on 

 pedicels. Tj . G. Native of Mexico. Pt. trifoliata, Moc. et 

 Sesse. fl. mex. icon. ined. Flowers greenish-white. 



Foot-fruited Shrubby Trefoil. Shrub 10 feet. 



* * Leaves simple. 



4 P. OVA'TA (Lour. fl. coch. 82.) leaves ovate ; racemes 

 short, scattered. Jj . G. Native of Cochin-china. Seringia ovata, 

 Spreng. syst. 1. p. 441. Stigma simple. Flowers dioecious, 

 the male only having been seen, therefore the genus is very 

 doubtful. 



Ot!rtie-leaved Ptelea. Shrub 4 feet. 



5 ? P. MONOPHY'LLA (Lam. diet. vol. 5.) leaves ovate-lan- 

 ceolate, nearly sessile ; flowers racemose ; fruit 3-winged. Tj . H. 

 Native of Carolina. 



One-leaved Ptelea. Shrub 4 feet. 



Cult. The hardy species of Ptelea will grow in any common 

 soil ; they are well adapted for shrubberies, and they are generally 

 increased by seeds, which should be sown in a light soil in April, 

 they may also be increased by layers. The greenhouse kinds 

 will thrive well in a mixture of loam and peat ; and ripened 

 cuttings will strike root, if planted in a pot of sand, with a hand- 

 glass placed over them. 



XLVII. BLACKBU'RNIA (in honour of John Blackburn, 

 an English naturalist). Forst. gen. t. 6. D. C. prod. 2. p. 83. 

 Blackbournea, Kunth, gen. tereb. p. 24. 



LIN. SYST. Dioecia, Tetrdndria. Flowers of separate sexes. 

 Calyx 4-toothed ; teeth acute, horizontal. Petals 4, elliptical, 

 hypogynous and valvate when in bud (Kunth). Stamens 4. 

 Ovary conical, 1-seeded. Style filiform. Stigma simple. Berry? 

 1-seeded. Trees, with simple or abruptly pinnate leaves. 

 Flowers in axillary racemes or panicles. 



1 B. PINNA'TA (Forst. gen. t. C.) leaves pinnate ; leaflets 

 oblong, blunt, unequal at the base ; panicles small, axillary. 

 T? . G. Native of Norfolk Island. Ptelea pinnata, Lin. fil. suppl. 

 126. Samara Blackburnia, Spreng. syst. 1. p. 441. Leaves 

 quite smooth, with 2 or 3 pairs of leaflets. Flowers yellow. 



Pinnate-leaved Blackburnia. Tree 20 feet. 



2 B. MONADE'LPHA (Roxb. fl. ind. 1. p. 435.) leaves alter- 

 nate, lanceolate ; filaments united at the base ; nectary a sta- 

 miniferous ring surrounding the base of the ovary ; berry supe- 

 rior, 1 -seeded ; seed arillate. Jj . S. Native of the East Indies 

 on the mountainous parts of the Circars. A large, erect, tim- 

 ber-tree ; the wood is white, close-grained, and durable ; and 

 in the country of its natural growth is employed by the natives 

 for a variety of purposes. Flowers small, yellow, disposed in 

 an axillary, frequently compound raceme. Berry about the size 

 of a cherry ; when ripe it has a deep-purple bloom, which makes 

 it very inviting to the eye. Seed of a lively purple colour. 



