BOMBACE Æ. 
white tomentum beneath ; petals exceeding the calyx; column 
of stamens exserted ; carpels twisted. h.S. Native of Brazil. 
H. Braziliénsis, Mik. fasc. 4. H. corylifòlia, Nees. et Mart. 
nov. act. bonn. 12. p. 44. Peduncles 2-3-flowered. Petals 
yellowish-green at the base, but intensely red at the apex. 
Ovate-leaved Screw-tree. Shrub 5 to 6 feet. 
4 H. srevispira (St. Hil. fl. bras. 1. p. 274. t. 54.) decan- 
drous ; leaves ovate, acute, somewhat cordate at the base, bi- 
serrate-toothed, velvety-tomentose ; limbs of petals broadish, 
reflexed, twice the length of the calyx ; column of stamens ex- 
serted ; carpels short, twisted. h.S. Native of Brazil in the 
provinces of Minas Geraes and Minas Novas. Peduncles 2- 
flowered, equal in length to the petioles. Petals at first yellow, 
with a red spot at the base of each, at length becoming intensely 
scarlet. 
Short-spired-carpelled Screw-tree. Shrub 4 to 6 feet. 
5 H. Barve’nsis (Lin. mant. 122,) decandrous; leaves cor- 
date, sharply-serrated, tomentose beneath : peduncles 2-flowered ; 
calyx somewhat 2-lipped ; carpels cylindrical, somewhat velvety, 
awl-shaped at top. h.S. Native of the Island of Baruco and 
the Isthmus of Panama, in woods by the sea-side. Jacq. amer. 
236. t. 149. Lobes of calyx 5, irregularly joined into two lips. 
Petals linear, white. Calyx greenish-yellow. The bark of the 
trunk and principal branches being easily peeled off and very 
tough, is used instead of ropes. 
Var. B, ovata (D.C. prod. 1. p. 475.) leaves ovate, scarcely 
cordate, obtuse, toothed, tomentose beneath. h.S. Native ? 
Perhaps a distinct species. 
Baruco Screw-tree. Fl. Sept. Oct. Clt. 1739. Sh. 12 ft. 
6 H. Guazumaroria (H. B. et Kunth, nov. gen. amer. 5. p. 
304.) decandrous; leaves obsoletely-cordate, somewhat ovate, 
unequal-sided, acuminate, serrate, hairy above, white from down 
beneath ; peduncles 2-flowered ; calyx 5-lobed ; petals spatulate. 
h. S. Native on the banks of the river Orinoco and near 
Caripe in Cumana. Resembles H. Baruénsis. Flowers red. 
Guazuma-leaved Screw-tree. Fl.? Clt. 1820. Shrub 8 ft. 
7 H. crewrerdua (D. C. prod. 1. p. 476.) decandrous ; 
leaves ovate, scarcely cordate at the base, acute, unequally and 
doubly serrate, downy on both surfaces; carpels cylindrical, some- 
what velvety, awl-shaped at the apex. h.S. Native of the 
Island of Timor. Petals oblong with long claws. Fruit like 
that of H. Baruénsis, but more slender. 
Grenia-leaved Screw-tree. Fl. June, July. Shrub 6 feet. 
8 H. macrore’rata (St. Hil. fl. bras. 1. p. 275.) decandrous ; 
leaves ovate, acuminated, biserrate-toothed, nearly smooth; 
limb of petals broad, reflexed, covering the calyx, which is 
nearly 3-times shorter; column of stamens greatly exserted ; 
carpels spirally twisted. h.S. Native of Brazil in the pro- 
vince of Minas Novas. Branches clothed with stellate hairs. 
Petals smooth. 
Long-petalled Screw-tree. Fl. June. Tree 12 to 15 feet. 
9 H. Sarcaro'tna (St. Hil. pl. usu. bras. no. 64. fl. bras. 1. 
p. 276.) leaves roundish-ovate or ovate, acute, slightly cordate, 
serrate-toothed, clothed with brown tomentum; petals narrow, 
hardly higher than the calyx; column of stamens twice that 
length; carpels twisted. h. S. Native of Brazil. A decoction 
of the roots of this shrub is used by the inhabitants of the Bra- 
zils, especially in the provinces of the mines, in syphilitic com- 
plaints, where they call it sarcarolha. Corolla vermillion. 
Sarcarolha Screw-tree. Shrub 4 to 5 feet. 
10 H. Mexica‘na (H. B. et Kunth, nov. gen. amer. 5. p. 
305.) decandrous ; leaves ovate, somewhat cordate, unequally ser- 
rate, soft, and pubescent above, hoary from down beneath ; calyx 
acutely 5-toothed ; fruit ovate, somewhat velvety. h.S. Na- 
tive of Mexico between Mazatlan and Chilpancingo. H. rubra, 
Moc. et Sesse, fl. mex. ic. ined. Petals unequal, spatulate at 
507 
1. Hexicrerrs. 
the apex, red. Calyx velvety. Genitals scarcely twice as long 
as the corolla. 
Mexican Screw-tree. Shrub 10 feet. 
11 H. Jamatce’nsts (Jacq. amer. 235. t. 179. f. 99.) decan- 
drous; leaves cordate, crenate, clothed with velvety down on 
both surfaces; flowers somewhat terminal, few, corymbose ; 
fruit ovate, densely clothed with down. h. S. Native of 
Jamaica and St. Thomas. Jacq. hort. vind. t. 143.—Pluk. alm. 
182, t. 245. f. 3.—Sloan. jam. 97. hist. 1. p. 22. Calyx green- 
ish-yellow. Petals white. Tube of stamens very long. 
Jamaica Screw-tree. Fl. June, July. Clt. 1739. Sh. 12 ft. 
12 H. verpasciroii (Link. enum. 2. p. 200.) leaves cordate- 
acuminate, serrated, downy, green; peduncles axillary, few- 
flowered ; fruit-stalk very long. h. S. Native of Brazil. 
Lodd. bot. cab. t. 504. Ker, bot. reg. t. 903. Corolla red. 
Mullein-leaved Screw-tree. Fl. Ju. Jul. Cit. 1818. Sh, 8 ft. 
13 H. rerrvuetna‘ta (Link. enum. 2. p. 199.) leaves cor- 
date, lanceolate, crenulate, downy, rusty beneath ; flowers ter- 
minal, somewhat racemose; fruit-stalk very long. h. S. 
Native of Brazil. Corolla yellowish. 
Rusty-leaved Screw-tree. Fl. June, July. Clt. 1823. Shrub 
8 feet. 
14 H. penta’npra (Lin. mant. 294.) pentandrous ; leaves 
‘ovate, floral ones coloured. h.S. Native of Surinam. Calyx 
hispid, with bristly hairs. 
Pentandrous Screw-tree. Shrub. 
Sect. II. ORTHOCARPÆ'A (from op6oc, orthos, straight, and 
kaproc, karpos, a fruit; because the carpels are straight, not 
twisted as in the preceding section). D.C. prod. 1. p. 476. 
Carpels straight, approximate, not twisted together into a spire 
nor radiating. 
15 H. aneustirouia (Lin. spec. 1366.) decandrous ; leaves 
lanceolate, acuminated, quite entire, white and downy beneath ; 
pedicels many-flowered. .G. Native of China about Can- 
ton. Obs. itin. p. 232. t. 5. Lour. coch. 530. Flowers pale- 
purple. Carpels clothed with stellate tomentum. 
Narrow-leaved Screw-tree. Shrub 6 feet. 
16 H. umsvu'ra (Lour. coch. 530.) decandrous ; leaves ovate- 
oblong, cordate, acuminate, doubly serrate, tomentose ; pedun- 
cles many-flowered ; fruit oblong, very hairy. h. G. Native 
of Cochin-china in woods. Willd. spec. 3. p. 721. Flowers 
pale-purple, in axillary, solitary, or crowded racemes. 
‘Hairy Screw-tree. Shrub 6 feet. 
17 H. vi'scrpa (Blum. bijdr. ex. Schlecht. Linnzea. 1. p. 653.) 
decandrous ; leaves roundish, cordate, acuminated, unequally 
serrated, somewhat 3-lobed, clothed with  stellate-pubescence 
above, but with stellate viscid villi beneath ; peduncles axillary, 
many-flowered, reflexed ; petals spatulate; fruit oblong, hairy. 
h. S. Native of Java. Flowers red ? 
Viscid Screw-tree. Shrub 6 to 8 feet. 
18 H.Jave’nsis (Blum. bijdr. ex. Schlecht. Linnea. 1. p. 
653.) decandrous ; leaves oblong or oblong-lanceolate, acuminate, 
rounded at the base, subcordate, densely and obtusely serru- 
lated, smooth above, but glaucous beneath, and are as well as 
the branches clothed with stellate down; peduncles axillary, 
twin, opposite, the leaves umbellately many-flowered. k. S. 
Native of Java. Flowers probably red. 
Java Screw-tree. Shrub 6 feet. 
19 H. spica'ra (Colebr. mss. in herb. Lamb.) villous; leaves 
oblong, acuminated, serrated ; peduncles axillary, twin, spi- 
cately-racemose ; column of stamens short; carpels straight. 
h.S. Native of the East Indies. Flowers red. 
Spiked-flowered Screw-tree. Shrub 10 feet. 
20 H. proniriora (Rich. act. soc. n. h. par. p. 111.) hex- 
androus ; leaves cordate, oval, unequal-sided, unequally serrated, 
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