BYTTNERIACEH. VI. 
Various-leaved Byttneria. Shrub climbing. 
§ 3. Species prickly on the stems, branches, petioles, and 
nerves. f 
11 B. mırsu`ra (Ruiz et Pav. fl. per. 3. p. 10.) leaves cor- 
date, acute, crenate, hairy beneath, with the ribs and petioles 
prickly ; peduncles compound, crowded. h. S. Native of Peru 
onthe Andes. Flowers umbellate, involucrate, Petals yellow 
at the base but purple at the apex. 
Hairy Byttneria. Shrub 2 to 3 feet. 
12 B. morus (H. B. et Kunth, nov. gen. amer. 5. p. 314. 
t. 481. a and b.) 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. h? 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. corpa‘ra (Lam. dict. 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. h.S. Native of Peru near 
Lima, in hedges at Chancay. Cay. diss. 5. p. 291. t. 150. 
Rem. et Schultz. syst. 1. p. 469. exclusive of synonym of 
Willd. Petals white, villous, with yellow mucrones. 
Cordate-leaved Byttneria. Fl. July. Clt. 1793. Sh. 4 ft. 
14 B. cettoipes (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 10-cleft, each division 
containing 5 anthers. h. S. Native of Brazil near Cana- 
braba. Petals dark-purple. 
Celtis-like Byttneria. Fl. April. Shrub 6 to 7 feet. 
15 B.sacirra#roxia (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. h. S. Native of Brazil in the province of 
Minas Geraes. Petals yellowish-green, ending in dark-purple 
ligule, Raceme composed of involucrated umbels. The stem 
1s covered with tubercles or prickles, which are evident under a 
microscope. 
Var. B, pubérula (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. 
Arron-leaved Byttneria. Shrub 2 feet. 
16 B. ausrra‘tis (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. 
h. oS. Native of Brazil in the province of St. Catherine. 
Petals ending in dark purple points. 
Southern Byttneria. Shrub cl. 
17 B. surca`ra (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. h.S. Native in the 
warmer parts of Peru. Petals green at the base, with dark- 
purple points. 
Furrowed-stemmed Byttneria. Shrub. 
18 B. rancrora‘ra (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. h.S. Native of Mexico on the mountains. Petals 
white with purple points. 
Byrtnerta. VII. Ayenta. 525 
Lanceolate-leaved Byttneria. Shrub cl. 
19 B. ova‘ta (Lam. dict. 1. p. 522.) leaves ovate, serrate- 
toothed, smooth ; petioles unarmed ; branches 5-angled, prickly ; 
stem erect; pedicels 3-6, axillary, 1-flowered, drooping. kh. S. 
Native of Peru. Cav. diss. 5. p. 291. t. 149. f. 1. Flowers 
villous, white, with purple ciliated mucrones. 
Ovate-leaved Byttneria. Shrub 8 feet. 
20 B. microrny’txa (Lin. mant. 209.) leaves elliptical, quite 
entire, but emarginate at the apex; prickles stipular ; pedicels 
short, 3-9, axillary, 1-flowered. h.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. rereticau'tis (Lam. dict. 1. p. 523.) leaves lanceo- 
late, acuminated, quite entire; branches, petioles, and stems 
terete, prickly; pedicels solitary, lateral, 1-flowered. h.S. 
Native of Peru. Cav. diss. 5. p. 292. t. 149. f.2. Flowers 
white, with purple mucrones ? 
Round-stemmed Byttneria. Shrub 4 feet. 
22 B. sca‘pra (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. h.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. 1753. Shrub 3 to 5 ft. 
23 B. Cartuacene’nsts (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. h.S. Native of 
Carthagena at the margins of woods. B. aculeata, Jacq. amer. 
76. Chætæ'a aculeata, Jacq. enum. 17. Flowers small, white, 
withered mucrones. 
Carthagena Byttneria. Shrub 5 to 6 feet. 
FI. Sept. Oct. 
+ Species not sufficiently known. 
24 B. acumina‘ra (Bred. ex Willd. rel. in Ram. and Schult. 
syst. 5. p. 470.) leaves ovate, acuminate, unarmed ; petioles 
somewhat prickly; stem round, prickly. h. S. Native of 
Caraccas. 
Acuminate-leaved Byttneria. Shrub. 
25 B. sauictroria (H. et. B. ex Willd. rel. in Reem. and 
Schult. syst. 5. p. 470.) leaves lanceolate, smooth ; stem angu- 
lar, and is as well as the petioles and ribs of leaves prickly. 
.S. Native of Cumana. 
Willon-leaved Byttneria. Shrub. 
26 B. coryrròLaA (H. et B. 1. c.) leaves oblong, somewhat 
cordate, serrate, acute; stem prickly. h. 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 
