BYTTNERIACEH. XXIV. Metuanta. 
Dotted-leaved Dombeya. Clt. 1820. Shrub 10 feet. 
12 D. ova'ra (Cav. diss. 3. p. 127. t. 41. f. 2.) leaves clothed 
with white tomentum beneath, smoothish above, 3-5-nerved, 
ovate, acute, toothed ; corymbs bifid; style very small. R.S. 
Native of Bourbon. Shrub clothed with rusty hairs. Flowers 
whitish, or pale red. 
Ovate-leaved Dombeya. Clt. 1822. Tree 16 feet. 
Cult. All the species of Dombéya thrive well in sandy loam ; 
and young cuttings will root freely in sand, under a hand-glass, 
in a moist heat. 
XXIV. MELHA'NIA (from Mount Melhan in Arabia Felix, 
the habitation of M. velutina). Forsk. descr. 64. Ait. hort. 
kew. ed. 2. vol. 4. p.146. D.C. prod. 1. p. 499. 
Lin. syst. Monadélphia, Decéndria. In every respect the 
same as Dombéya, but with 10 stamens, 5 fertile, and 5 sterile, 
each of the fertile ones bearing either 1 or 2 anthers. Suffi- 
ciently distinct from Dombéya. 
81. Fertile filaments bearing 2 anthers each. 
1 M. DECANTHE`RA (D. C. prod. 1. p. 499.) leaves smooth, 
elliptical, acuminated at both ends, repandly-toothed ; pedun- 
cles many-flowered, umbelliferous. h. S. Native of Ma- 
dagascar. Dombéya decanthèra, Cav. diss. 3. p. 126. t. 40. 
f. 2. Flowers small, white? 
Ten-anthered Melhania. 
§ 2. 
2 M. eryturo’xyton (Ait. hort. kew. ed. 2. vol. 4. p. 146.) 
leaves Ovate-cordate, somewhat peltate, acuminate, crenulated, 
tomentose beneath, netted ; peduncles usually 3-flowered. h .S. 
Native of St. Helena in groves. Flowers large, white. Pen- 
tapetes erythréxylon, Ait. hort. kew. ed. 1. vol. 2. p. 138. Dom- 
béya erythréxylon, Sims, bot. mag. t. 1000. This tree flowers 
even when only 14 foot high. 
Red-mwooded Melhania. Fl. May, Aug. Clt. 1772. Tree 15 ft. 
3 M. metanOxyton (Ait. hort. kew. ed. 2. vol. 4. p. 146.) 
leaves cordate, quite entire, tomentose on both surfaces, even ; 
peduncles usually 3-flowered. 4. S. Native of St. Helena. 
—Pluk. mant. 6. t. 333, f. 5. The involucel in this and M. ery- 
thréxylon soon fall off. Flowers white. 
o Black-wooded Melhania. Fl. July, Aug. Clt. 1800, Tree 
0 feet. 
4 M. Denna’ m(R. Brown, in Denh. et Clapp. trav. appen. p. 
27.). h.G. Native of the north of Africa near Soudan. This 
species differs from all the others in having its bracteas regu- 
larly whorled, and at the same time longer and much broader 
than the divisions of the calyx. 
Denham’s Melhania. Shrub. 
5 M. veturi'na (Forsk. descr. 64.) leaves ovate-lanceolate, 
serrated, tomentose; umbels axillary, simple, 4-flowered. h.G. 
Native of Arabia Felix on Mount Melhan, whence the generic 
name. Pentdpetes velutina, Vahl. symb. 1. p. 49. Dombéya 
velutina, Willd. spec. Flowers yellow. 
Velvety Melhania. Shrub 3 to-6 feet. 
_6 M. Burcue’tu (D. C. prod. 1. p. 499.) leaves oblong- 
linear, bluntish, somewhat serrated, velvety and hoary on both 
surfaces ; pedicels axillary, 1-flowered, lengthof petioles. k. G. 
Native of the Cape of Good Hope. Melhania, Burch, cat. no. 
2417. Flowers white ? 
Burchell’s Melhania. Clt. 1818. Tree 15 feet. 
7 M.? prostxa‘ta (D. C. prod. 1. p. 499.) leaves linear, 
entire, smooth above, hoary beneath ; pedicels axillary, 1- 
flowered, twice or thrice as long as the petioles. h. G. Native 
of the Cape of Good Hope. Dombéya prostrata, Burch. cat. no. 
2153. Flowers not seen. 
Prostrate Melhania. Shrub prostrate. 
VOL, I.— PART. VI. 
Tree 10 feet. 
Fertile filaments, bearing 1 anther each. 
XXV. Trocnetra. XXVI. Prerospermum. 537 
Cult. Melhània is a beautiful genus of shrubs and trees. 
They will grow well in a mixture of loam, peat, and sand, and 
cuttings will root in the same kind of soil, under a hand-glass, 
in heat. They are all liable to be covered with insects, such as 
the mealy bug, scale, and red spider, which should be carefully 
cleaned off, or the plants will not thrive. 
XXV. TROCHETIA (in memory of M. Du Trochet, a ve- 
getable physiologist). D.C. mem. mus. 10. p. 106. prod. 1. 
p- 499. 
Lin. syst. Monadélphia, Polydndria. Calyx 5-parted (f. 
92. a.), spreading, naked. Petals 5 (f. 92. b.). Stamens 20-25, 
monadelphous at the base (f. 92.c.), 5-7 of which are sterile 
(f. 92. d.). Ovary (f. 92. e.) 1, roundish, scaly. Style filiform 
(f. 92. f.). Capsule 5-celled, 5-valved. Seeds small, roundish, 
wingless. Shrubs with entire leaves, which are rusty or scaly 
beneath and axillary, 1-3-flowered, drooping peduncles. 
FIG. 92. 
1 T. unrrrora (D. C. mem. 
mus. 10. p. 106. with a figure). 
leaves ovate, somewhat acute, 
twice as long as broad ; peduncles 
1-flowered. h. S. Native of 
the Island of Bourbon. Flowers 
white or pale-red (f. 92.). 
One-flowered Trochetia. 
20 feet. 
2 T. TRIFLÒRA (D. C.1. c. with 
a figure) leaves ovate-lanceolate, 
acuminated, 4-times as long as 
broad ; peduncles 3-flowered ; 
flowers rising from the top of the 
peduncle, middle pedicel naked, 
lateral ones each furnished with a 
bractea. h. S. Native of the Is- 
land of Bourbon, Flowers white 
or pale-red ? 
Three-flowered Trochetia. Tree 20 feet. , 
Cult. These trees will succeed well in a mixture of loam 
and peat; and young cuttings will strike root freely in the 
same kind of soil under a hand-glass, in a moist heat. 
Tree 
XXVI. PTEROSPE’RMUM (from rrepoy, pteron, a wing, and 
oreppa, sperma, a seed ; in allusion to the seeds being winged). 
Schreeb. gen. no. 1124. D.C. mem. mus. 10. p. 111. prod. 1. 
. 500. 
P Lin. syst. Monadélphia, Polyándria. Calyx 5-parted, 
somewhat tubular at the base, naked or involucrated. Petals 
5, usually shorter than the sepals. Stamens 20, 5 of these are 
sterile. Style cylindrical. Stigma thickish. Capsules woody, 
5-celled. Seeds drawn out into a wing. Albumen sparing or 
wanting. Trees with large leaves, which are usually hoary 
beneath, and large, axillary or terminal, solitary flowers. 
Secr. I. Vexa'ca (meaning unknown). Adans. fam. 2. p. 
389. D.C. prod. 1. p. 500. Involucel wanting. 
1 P. acertFottum (Willd. spec. 3. p. 729.) leaves broad, pel- 
tately-cordate, obtuse, with a short acumen, toothed, tomentose 
beneath ; pedicels shorter than the petioles. k. S. Native of 
the East Indies. Sims, bot. mag. t. 620. Pentapetes acerifolia, 
Lin. spec. 939. Cav. diss. 3. p. 131. t. 44. Velago 'xylocarpa, 
Geert. fr. 2. p. 245. t. 183,—Amm. act. petr. 8. t. 16 and 17. 
Flowers white. 
Maple-leaved Pterospermum. Clt. 
Tree 25 feet. 
2 P. suserIròLIUM (Willd. spec. 3. p. 728.) leaves oblong, 
acuminated, obliquely cordate at the base, coarsely toothed at 
3Z 
Fl. July, Sept. 1790. 
