524 
with stellate hairs. Flowers larger than those of the C. dspera 
species, yellowish ? 
Jack’s Commersonia. Fl. Sept. Shrub cl. 
6 C. PLATYPHYLLA (Andr. bot. rep. no. 603. t. 519. under 
C. echinata,) hairy ; stem shrubby; leaves broad, ovate, acu- 
minated, unequally toothed, obliquely cordate, hairy on both 
surfaces. h.S. Native of the Molucca Islands. Sims, bot. 
mag. t. 519. Flowers white, in axillary panicles. 
Var. B, Leschendultu (D. C. prod. 1. p. 486.). M. de Can- 
dolle has a specimen from the botanic garden of Calcutta which 
is very like C. platyphylla, but the leaves are equally serrate, 
smooth above; the panicles are axillary and leafy, and the 
floriferous branches opposite the leaves. Perhaps a proper 
species ? 
Broad-leaved Commersonia. Fl. Ju. Jul. Clt. 1806. Sh. 4 ft. 
7 C. prtdsa (Roxb. fl. ind. 2. p. 381. under Butinéria) leaves 
with from 3-5 acute angles, toothed, 7-nerved, with a large long 
gland on the middle one near the base ; umbels of flowers axil- 
lary, proliferous ; mucrones of petals filiform; stem twining. 
h. u. S. Native of Chittagong in the East Indies. Petals 
yellow on the outside and red within, of a bright orange-colour 
at the top. Younger branches hairy. This climbs to a great 
extent. 
Hairy-branched Commersonia. Fl. Sept. Shrub cl. 
8 C. Gaupicnav'p1 (Gay. in litt. D. C. prod. 1. p. 486.) 
stem shrubby ; leaves profoundly cordate, unequal-sided ; his- 
pid above, tomentose beneath. h. G. Native of New Holland 
on the eastern coast. Flowers probably white. 
Gaudichaud’s Commersonia. Shrub 3 feet. 
9 C. Frase'rt (Gay, ex Spreng. syst. 1. p. 954.) leaves 
ovate-oblong, serrated, tomentose beneath ; cymes opposite the 
leaves ; sterile filaments elongated, petal-like, spatulate. h.G. 
Native of New Holland. 
Fraser’s Commersonia. Shrub 3 to 4 feet. 
Cult. These shrubs will grow well in a mixture of loam and 
peat, and ripened cuttings will root readily in sand under a 
hand-glass, those of the first seven in heat. 
VI. BYTTNERIA (in honour of David Sigismund Augus- 
tus Byttner, once a professor of botany in the University of 
Gottingen; who published in 1750 a catalogue of the plants in 
the garden of an amateur named Cunon). Leefl. itin. 313. Lin. 
gen. no. 268. but not of Duhamel. D. C. prod. 1. p. 486. 
Lin. syst. Monadélphia, Decéndria. Calyx 5-cleft. Petals 
5, unguiculate, concave at the base, drawn into a ligula between 
the lobes of the concave part, which is variously divided. Tube 
of stamens urceolate, variously divided, with 5 sterile segments 
and 5 alternate, fertile ones opposite the petals, bearing twin or 
subglobose anthers. Style short, smooth, crowned by 5 stigmas. 
Capsule subglobose 5-lobed, echinated ; carpels 1-seeded from 
abortion. Albumen wanting. Cotyledons convolute. Erect 
or scandent shrubs. Leaves simple. Umbels simple, disposed 
in something like racemes or panicles, rarely in corymbs. 
Flowers small, usually dark purple. Calyx and corolla valvate. 
This genus differs from Commersonia in the ligula of the petals 
being inserted on the back of the cucullate part of the petals, 
not gradually ending in a ligula as in that genus. 
§ 1. Unarmed species, native of New Holland (allied to Com- 
mersonia). Rulingia, R. Brown. These plants perhaps agree 
better with Commersonia than with Bytinéria. This section is no 
doubt a distinct genus. 
1 B. pasyeny’t1a (Gay, in litt. D. C. prod. 1. p. 486,) leaves 
ovate-lanceolate, unequally serrated, hairy on both surfaces ; 
mucrones of petals exceeding the calyx. h. G. Native of 
BYTTNERIACEZH. V. Commersonia. 
- in bot. mag. t. 2191. 
VI. BYTTNERIA. 
Van Diemen’s Land. Commersdnia diphylla, Andr. bot. rep. 
t. 603. Flowers white, in terminal corymbs. 
Thick-leaved Byttneria. Fl. June, Jul. Clt. 1780. Sh. 4 ft. 
2 B. pannosa (D.C. prod. 1. p. 486.) leaves ovate-lanceo- 
late, unequally serrate-toothed, pubescent above, hairy beneath ; 
mucrones of petals shorter than the segments of the calyx. 
h. G. Native of New Holland. Rulingia pannosa, R. Br. 
Byttnéria inodora, Gay. ined. Lasiopé- 
talum tomentosum, Cels. B. australis, Sieb. Flowers white from 
tomentum, in axillary panicles. 
Cloth-leaved Byttneria. Fl. Ju. Jul. Clt. 1800. Sh. 3 ft? 
3, B. HERMANNIÆFÒLIA (Gay, in litt. D. C. prod. 1. p. 486.) 
leaves ovate, unequally crenate-toothed, tomentose beneath ; mu- 
crones of petals shorter than the segments of the calyx. h. G. 
Native of New Holland about Port Jackson. Flowers white. 
Hermannia-leaved Byttneria. Fl. June, Jul. Clt. 1823. Sh. 
§ 2. Unarmed species, natives of America, and one from the 
Mauritius. 
4 B. macropny’txa (H. B. et Kunth, nov. gen. amer. 5. p. 
315.) leaves cordate, ovate-roundish, obtuse, serrate-crenate, 
marked at the base with a clear spot, and are as well as branches 
pubescent ; peduncles many-flowered, axillary, usually in threes. 
Y%.S. Native of New Granada near Honda. Points of petals 
dark-purple. 
Long-leaved Byttneria. Pl. 1 to 2 feet. 
5 B. mexastomoipes (St. Hil. fl. bras. 1. p. 144. t. 28.) 
stem suffruticose, nearly simple; leaves ovate, quite entire, 
smooth, upper ones lanceolate; panicle terminal, elongated, 
nearly simple ; tube of stamens 5-lobed; lobes very obtuse, 3- 
crenate, sterile; anthers sessile beneath the lobes. h. S. 
Native of Brazil. _Racemes compound, involucrated, disposed in 
umbel-like fascicles along the rachis. l 
Melastoma-like Byttneria. Fl. July. Shrub 2 feet. 
6 B. Gaya‘na (St. Hil. fl. bras. 1. p. 145.) stem shrubby, 
scandent, unarmed ; leaves oblong, or oblong-lanceolate, long- 
acuminated, quite entire, smoothish ; peduncles axillary, umbel- 
liferous ; tube of stamens 5-cleft, with the antheriferous divisions 
a little below. h., S. Native of Brazil in the province of 
St. Paul. Petals dark-purple, ending in yellow points. 
Gay’s Byttneria. Fl. March. Shrub climbing. 
7 B. smæròra (St. Hil. fl. bras. 1. p. 146.) stem suffruticose, 
climbing, unarmed ; leaves heart-shaped, acuminated, very acute, 
quite entire; corymbs sublateral ; tube of stamens 10-cleft, 5 
sterile divisions broadest, antheriferous, 5, very short and nar- 
row. h.. S. Native of Brazil on the banks of the river 
Parahyba near Uba. Petals smooth, white. 
Sida leaved Byttneria. Fl. Feb. Shrub cl. or tw. 
8 B. Brasruie'nsis (Spreng. syst. 1. p. 790.) leaves subcor- 
date-gblong, acuminated, triple-nerved, serrated, floccosely-to- 
mentose ; peduncles axillary, subracemose ; branches terete, 
tomentose. h.S. Native of Brazil. 
Brazilian Byttneria. Shrub. 
9 B. cATALPÆFÒLIA (Jacq. hort. schoenbr. 1. t. 46.) leaves 
cordate, quite entire, smooth, acuminate; stem climbing. k + U- S. 
Native of Caraccas. Flowers white. Peduncles solitary or 
tern, axillary, panicled. 
Catalpa-leaved Byttneria. Clt. 1823. Shrub cl. 
10 B. HETEROPHY'LLA (Hook, bot. misc. pt. 3. p. 287. t. 61.) 
climbing; leaves cordate, with a short acumen, entire, lobed, 
or palmate; petals with a tooth on each side of the saccate 
part. k. J. S. Native of the Mauritius, and Madagascar. 
Telfairia volùbilis, Newm. mss. Heterophyllum ramòsum, Bojer. 
mss. Panicles axillary. Leaves pubescent in the axils of the 
veins. Calyx scarlet. Petals yellow, but reddish on the back, 
ending in a long, linear, ciliated point. 
