BYTTNERIACE^E. VI. BYTTNERIA. VII. AYENIA. 



525 



Various-leaved Byttneria. Shrub climbing. 



3. Species prickly on the stems, branches, yeiioles, and 

 nerves. 



11 B. HIRSU'TA (Ruiz et Pav. fl. per. 3. p. 10.) leaves cor- 

 date, acute, crenate, hairy beneath, with the ribs and petioles 

 prickly ; peduncles compound, crowded. Jj . S. Native of Peru 

 on the Andes. Flowers umbellate, involucrate. Petals yellow 

 at the base but purple at the apex. 



Hairy Byttneria. Shrub 2 to 3 feet. 



12 B. MO'LLIS (H. B. et Kunth, nov. gen. amer. 5. p. 314. 

 t. 481. a and 6.) leaves cordate, acuminated, crenate, un- 

 armed, soft, tomentose, marked with a clear spot at the base ; 

 branches prickly, villous, tomentose; umbels 7-11-flowered, 

 axillary, and opposite the leaves, solitary or tern. Tj ? S. Native 

 of South America near Santa Fe de Bogota. Calyx red. Points 

 of petals white. 



Soft-leaved Byttneria. Shrub 3 to 4 feet. 



13 B. CORDA'TA (Lam. diet. 3. p. 523.) leaves cordate, acu- 

 minate, serrate, with 1 gland beneath, pubescent ; petioles un- ' 

 armed ; stems prickly ; peduncles pendulous, usually tern, 

 unequal 6-7-flowered, umbellate. lj . S. Native of Peru near 

 Lima, in hedges at Chancay. Cav. diss. 5. p. 291. t. 150. 

 Raem. et Schultz. syst. 1. p. 469. exclusive of synonym of 

 Willd. Petals white, villous, with yellow mucrones. 



CWate-leaved Byttneria. Fl. July. Clt. 1793. Sh. 4 ft. 



14 B. CELTOIDES (St. Hil. fl. bras. 1. p. 141. t. 24.) stem 

 shrubby, procumbent, prickly ; leaves ovate-oblong, with a long 

 acumen, cordate at the base, obsoletely serrated, puberulous on 

 both surfaces, roughish above ; panicle axillary, umbelliferous, 

 shorter than the leaves ; tube of stamens 1 0-cleft, each division 

 containing 5 anthers. Tj . S. Native of Brazil near Cana- 

 braba. Petals dark-purple. 



Celtis-like Byttneria. Fl. April. Shrub 6 to 7 feet. 



15 B. SAGITT^EFOLIA (St. Hil. fl. bras. 1. p. 142. t. 27.) stem 

 suffruticose, erect; leaves arrow-shaped, acute, upper ones 

 toothed at the top ; petioles triquetrous ; raceme terminal ; tube 

 of stamens 5-lobed ; lobes 3-toothed, sterile ; anthers sessile 

 beneath the lobes. Tj . S. Native of Brazil in the province of 

 Minas Geraes. Petals yellowish-green, ending in dark-purple 

 ligulse. Raceme composed of involucrated umbels. The stem 

 is covered with tubercles or prickles, which are evident under a 

 microscope. 



Var. /3, puberula (St. Hil. 1. c.) stem puberulous ; leaves 

 less rough, entire at the apex ; bracteas leafy ; umbels much 

 longer than in the species. Province of St. Paul. 



Arrow-leaved Byttneria. Shrub 2 feet. 



16 B. AUSTRA'LIS (St. Hil. fl. bras. 1. p. 145.) stem shrubby, 

 prickly, scandent ? leaves oblong with long acumens, obtuse at 

 the base, quite entire, bearded in the axils of the nerves ; pe- 

 duncles sublateral, umbelliferous ; tube of stamens 5-lobed. 

 T? . ,_,. S. Native of Brazil in the province of St. Catherine. 

 Petals ending in dark purple points. 



Southern Byttneria. Shrub cl. 



17 B. SULCA'TA (Ruiz, et Pav. fl. per. 3. p. 10.) leaves cor- 

 date, ovate, serrated, pubescent, with the ribs and petioles 

 prickly ; peduncles twin, 3-5-flowered. Tj . S. Native in the 

 warmer parts of Peru. Petals green at the base, with dark- 

 purple points. 



Furroned-stemmed Byttneria. Shrub. 



18 B. LANCEOLA'TA (Moc. et Sesse, fl. mex. icon. ind. D. C. 

 prod. 1. p. 487.) leaves ovate-lanceolate, somewhat cordate, 

 rarely serrated, acuminate, and are unarmed as well as the pe- 

 tioles ; stem prickly, climbing, angular ; peduncles tern, 5-7- 

 flowered. \i . S. Native of Mexico on the mountains. Petals 

 white with purple points. 



Lanceolate-leaved Byttneria. Shrub cl. 



19 B. OVA'TA (Lam. diet. 1. p. 522.) leaves ovate, serrate- 

 toothed, smooth ; petioles unarmed; branches 5 -angled, prickly; 

 stem erect; pedicels 3-6, axillary, 1 -flowered, drooping. Tj . S. 

 Native of Peru. Cav. diss. 5. p. 291. t. 149. f. 1. Flowers 

 villous, white, with purple ciliated mucrones. 



Oua/e-leaved Byttneria. Shrub 8 feet. 



20 B. MICROPHY'LLA (Lin. mant. 209.) leaves elliptical, quite 

 entire, but emarginate at the apex ; prickles stipular ; pedicels 

 short, 3-9, axillary, 1-flowered. T; . S. Native of St. Domingo 

 near Port au Prince. Cav. diss. 5. p. 292. t. 143. f. 2. Jacq. 

 hort. vind. t. 29. Flowers white with purple mucrones. 



Small-leaved Byttneria. Fl. Ju. Clt. 1816. Shrub 5 ft. 



21 B. TERETICAU'LIS (Lam. diet. 1. p. 523.) leaves lanceo- 

 late, acuminated, quite entire ; branches, petioles, and stems 

 terete, prickly; pedicels solitary, lateral, 1-flowered. Tj . S. 

 Native of Peru. Cav. diss. 5. p. 292. t. 149. f. 2. Flowers 

 white, with purple mucrones ? 



Sound-stemmed Byttneria. Shrub 4 feet. 



22 B. SCA'BRA (Lin. syst. 197.) leaves lanceolate, toothed, 

 somewhat hastate at the base ; branches, petioles, and pedun- 

 cles angular ; stems prickly ; peduncles axillary, numerous, 

 subumbellate ; tube of stamens 10-crenate. 1? . S. Native of 

 South America between Cayenne and Couron. Cav. diss. 5. 

 p. 291. t. 148. f. 1. Aubl. guian. t. 96. Flowers white, with 

 red mucrones ; anthers yellow. 



Scabrous Byttneria. Fl. July. Clt. 1793. Shrub 3 to 5 ft. 



23 B. CARTHAGENE'NSIS (Jacq. amer. ed. pict. p. 41.) cauline 

 leaves ovate, those of the branches ovate-lanceolate, bluntly 

 acuminate, entire ; ribs of leaves, petioles, and rambling branches 

 prickly ; racemes short, axillary, aggregate. Ij . S. Native of 

 Carthagena at the margins of woods. B. aculeata, Jacq. amer. 

 76. Chaetae'a aculeata, Jacq. enum. 17. Flowers small, white, 

 withered mucrones. 



Carthagena Byttneria. Fl. Sept. Oct. Shrub 5 to 6 feet. 



f" Species not sufficiently knorvn. 



24 B. ACUMINA^TA (Bred, ex Willd. rel. in Raem. and Schult. 

 syst. 5. p. 470.) leaves ovate, acuminate, unarmed ; petioles 

 somewhat prickly ; stem round, prickly. Tj . S. Native of 

 Caraccas. 



Acuminate-leaved Byttneria. Shrub. 



25 B. SALICIFOLIA (H. et. B. ex Willd. rel. in Raem. and 

 Schult. syst. 5. p. 470.) leaves lanceolate, smooth ; stem angu- 

 lar, and is as well as the petioles and ribs of leaves prickly, 

 t; . S. Native of Cumana. 



Willow-leaved Byttneria. Shrub. 



26 B. CORYLIFOUA (H. et B. 1. c.) leaves oblong, somewhat 

 cordate, serrate, acute ; stem prickly. ^ . S. Native of South 

 America. 



Hazel-leaved Byttneria. Fl. ? Shrub ? 



Cult. The species of this genus are of easy culture ; they 

 thrive best in a mixture of loam and peat. Ripened cuttings 

 of the stove species root freely in mould or sand under a hand- 

 glass, in heat , and young cuttings of the greenhouse species 

 will root freely in sand under a hand-glass ; they also may be 

 raised from seeds, which sometimes ripen in this country. The 

 herbaceous kinds may be either increased by dividing the plants 

 at the roots or by seeds. None of them are worth cultivating 

 except in general collections. 



VII. AYE'NIA (in honour of the Duke D' Ayen of the house 

 of Noailles, who has contributed to the progress of botany by 



