PiHAMNE.E. XL CoLLETiA. XII. Trevoa* XIII. Discaria. XIV. Hovenia. 



35 



6 C. Ciiaca^ye ; Icax^es somewhat obovate, serrated ; flowers 

 tern ; branches very leafy. J^ . G. Native of Pervi. Rham- 

 nus Chacaye, Domb. herb. Flowers yellowish. 



Chacaye Colletia. Shrub 2 feet. 



7 C. tetragona (Brogn. mem. rhamn. p. 59.) branches 

 almost naked, leafless, smooth ; branchlets distant, simple, spiny, 

 stiff*, spreading ; racemes axillary, rising beneath the spines, usu- 

 ally 6-flow^ered ; fruit opposite on the branchlets, sessile on the 



branches, racemose. "^ . G. Native of Peru. Domb. Flowers 

 yellowish. 



45. B.) hairy-pubescent ; leaves oblong-elliptic, entire, 5-nerved, 



. G. Native of Chili on the Andes. 



hoary beneath. T2 



Five-nervedAediXQA Trevoa. 



Shrub 4 to 5 feet. 



2 T. trine'rvis (Gill. etHook, hot. misc. 1. p. 159.) smooth ; 

 leaves elliptic, crenately-serrated, 3-nerved, green beneath. 

 ^ .G. Native of Chili. 



J'Ar^^c-w^n'ccZ-leaved Trevoa. Clt. 1828. Slirub 4 to G feet. 



Cult. For culture and propagation see Rctanillay p. 34. 



Tetragonal-hxdiiiQhedi Colletia. 



Shrub 3 feet. 



f Allied species* 

 8 C. infe'sta (Brogn. mem. rhamn. p. 59.) shrub much 



XIII. DISCA^RIA (from (^((TKor,r7/Vco5, a disk ; disk broad). 

 Hook, bot. misc. 1. p. 15(5. 



Lin. 



SYST. 



Tetra-rcnt/indria^ Monogijma. Calyx short, 

 campanulate, 4-5-clcft, coloured. Petals 4-5, smaller than tlie 

 stamens. .Anthers 2-celled, bursting lenfrthwise. Disk girding 



branched ; branches almost opposite, cylindrical, ultimate ones the base of the germ, bowl-shaped, fleshy, with a narrow, cle- 



spiny; spines simple, spreading, stiff, axillary ; leaves opposite, vated, nearly entire, free margin. Ovary half superior. Style 



oblong-linear, quite entire, smooth ; almost nerveless ; flowers 



axillary, solitary ; peduncles slender, shorter than the leaves. 



T; . S. Native oi Mexico, in the plains near Gazave. Ceano- 



short, crowned by a 3-lobed stigma. — Spiny shrubs. 



1 D. Amekica'na (Hook, bot. misc. 1. p. 156. t. 44. D.) 



thus infestus, H. B.et Kunth, nov. gen. amer. 7. p. 61. t. G14. 



Rhamnus linearis, Moc. et Sesse, in herb. 



Petals cu- 



Disk thin 



D. C. prod. 2. p. 31. 



Lamb. Calyx hemispherical, with a spreading limb. 



cuUate. 



Anthers cordate ; cells confluent at top 

 at the limit of the throat, incrusting the tube. 



calyx for the most part 5-cleft, with reflexed segments. 

 Native of Buenos Ayres. 



American Discaria. Shrub. 



2 D. Austra'lis (Hook, 1. c. p. 157. t, 45. A.) calyx 4-cleft, 



with erect segments. 



T2 . G. Native of New Holland at C 



s 



Ovary semi- River to the south of Batluirst. Colletia puhescens, Brogn. mem. 



adnate to the bottom of the tube of the calyx, 3-celled. Style rhamn. p. 59. Branches almost leafless, pubescent; branchlets 

 simple, filiform, longer than the tube of the calyx. Stigma simple, spiny. Leaves few, opposite, obovate, minute, quite 

 simple. Flowers white. 



Troublesome Colletia. Cult. 1824. Shrub 3 feet. 



9 C. MULTiFLORA (Moc. et Scssc, fl. mex. icon. ined. D. C, 

 prod. 2. p. 29.) leaves entire, oblong; pedicels 1-flowered, 5-6^ 

 crowded together, length of flower ; petals 5, cucullate. Ij . G. 

 Native of Mexico. Disk extended even to the throat, and half 

 adnate to the ovary. Branches spiny, bearing the flow^ers be- 

 neath the spines. 



Many-flowered Colletia. Shrub 4 feet. 



IOC? dispe'rma (D. C. prod. 2. p. 29.) leaves entire, oblong ; 

 pedicels 1-flowered, 2 or 3 in a fascicle, length of flowers; 



Native of 



entire, pubescent. Racemes short, many-flowered, rising from 

 beneath the spines. Petals small, linear, convolute. 



Southern Discaria. Shrub. 



Cult. For culture and propagation see Retanilla, p. 34. 



FIG. 6. 



flowers 5"petalled ; berries oblong, 2-celled. 

 Mexico. 



T2 . G. 



Branches unarmed. Calyx very short in this and 

 preceding species. 



Two-seeded Colletia. Shrub 3 feet. 



11 C? VELUTiNA (Spreng. syst. 1. p. 771.) leaves alternate, 

 oblong, serrated, villous beneath ; peduncles axillary, cymose, 

 and downy, as well as the flow^ers. 1^ . S. Native of Brazil. 



Velvety Colletia. Shrub 2 feet. 



Cult. See Retanilla for culture and propagation. 



XII. TREVO'A (Trevoy the name of some Spanish botanist). 



XIV. HOVFNIA (in honour of David Hoven, a senator of 



Meyers, mss. Hook, bot. misc. 1. p. 158. 



Lin. syst. Pentdndria, Monogynia. Calyx turbinate, 5- Amsterdam, who contributed to the success of the travels of 

 cleft, permanent, with reflexed segments. Petals cucullate, erect, Thunberg by his good oflSces). Thunb. jap. 101. D. C. prod. 



inclosing the stamens. Anthers 1 -celled, bursting by a kidney- 



shaped chink, 

 hairy 



Disk almost wanting. 

 3-celled; cells 1 -seeded. 



Ovary superior, large, 



Style awl-shaped, much ex- 



serted, and very hairy, crowned by an acute simple stigma. 



2. p. 40. Brogn. mem. rhamn. p. 60. 



Lin. svst. Pentdndria, Monogynia. Calyx somewhat spread- 

 ing, 5-cleft (f. 6. B. a.). Petals 5, obovate, unguiculate (f 6. 

 B. e.), convolute. Stamens inclosed in the petals ; anthers 



Capsule membranous, 2-valved, 1-seeded, (2 of the cells being ovate, 2-celled. Disk fleshy, flat (f. G. B./.). Ovary 3-celled. 

 abortive) crowned by the permanent style. Seed erect, elliptical, Style trifid. Stigmas 3, round. Fruit free, tricoccous (f C. B. 

 compressed, marked by a conspicuous longitudinal furrow. Al- /.), seated on a thick fleshy peduncle (f. 6. B. h.). — Trees, with 

 bumen sparing, fleshy. Embryo erect, cylindrical, with an alternate, broad, cordate, serrated, 3-nerved leaves. 

 inferior radicle. — Spiny shrubs with awl-shaped short spines, 

 cruciately disposed. Leaves in fours, marked with longitudinal 

 nerves. Fascicles of flowers rising from tubercles in the axils 

 of the leaves and at the base of the spines. 



1 H. du'lcis (Thunb. jap. 101.) leaves cordate, ovate, acu- 

 minated, equal at the base, 3-nerved, smooth. ^ . G. Native 

 of Japan, near Nagasaki, where it is called Ken and Kenpohmas. 



witli a figure. Flowers small, 



Koempf. amocn. ex. 2. p. 809. 



1 T. quinquene'rvis (Gill, et Hook, bot. misc. 1. p. 158. t. white, in axillary and terminal dichotomous panicles. Peduncle* 



v 2 



