AN ENCYCLOPADIA 
OF HORTICULTURE. 245 
Pteris—continued. 
P. semipinnata (half-pinnate). sti. 1ft. or more long, strong, 
erect, bright chestnut-brown. fronds lft. to 14ft. long, 6in. to 
9in. broad, ovate-lanceolate; upper part cut nearly to the 
rachis into numerous close, entire, linear lobes, the lowest of 
which are 1jin. to in. long; lower two-thirds of the frond with 
six or eight pairs of opposite, distantly-placed pinne, the largest 
of which are din. to bin. long, with a long, linear, entire point, 
and a broad, entire wing on the upper side of the rachis, but the 
lower side with several linear pinnules, lin. to 2in. long. Invo- 
lucres membranous. East Indies, &e. Fig. 314. (H. G. F. 59.) 
P, serrulata (saw-edged).* Spider Fern. sti. 6in. to 9in. long, 
erect, wiry, pale or brownish. fronds Yin. to 18in. long, 6in. to 
Sin. broad, ovate, bipinnatifid; main rachis margined with a 
wing, which — downwards; pinne in six or 
more distant, opposite pairs, the upper ones simple, often 4in. to 
6in. long, gin. to fin. broad, the lower ones with several long- 
linear, erecto-patent pinnules on each side, the edges of the 
barren ones spinulose-serrulate. Involucres narrow-membranous. 
China, 1770. Greenhouse. The following varieties of this species 
are enumerated by Mr. B. S. Williams: 
P. s. angustata (narrow). An elegant form, with pinne very 
much narrower than in the type, and crested at each point. 
P. s. — (Appleby’s). A superb garden variety ; 
long and narrow, pendent, furnished with a pasa 
fringed tassel at all the points. 
lon orn. phi ere ). This handsome variety is 
inne 
and 
en origin. I erect fronds, with much-shortened 
pinne, forming dense, crisp, corymbiferous heads. : 
P. s. cristata (crested). An erect garden form, with the apex of 
-~ each pinna beautifully crested. 
P, s. c. semi-fastigiata (slightly fastigiate). The finest variet; 
of all ; it has a compact, hon habit, and forms a very large an 
broad-crested cry ed the gaan the lower portion of the frond 
is developed as in the normal form. 
P. s. dactyla (many-fingered). In this variety, the points 
of pr heanas are — tines forked or fingered, pet ge a 
quently much lengthened out. 
+ 
1G. 315. PTERIS SERRULATA TENUIFOLIA, showing Habit and 
* Portion of detached Frond, 
P. s. tenuifolia (slender-fronded). A form with narrow pinne. 
See Fig. 315. 
P. spinulifera (spine-bearing). A synonym of P. atrovirens. 
P. Stelleri —— synonym of Pellea gracilis. 
P straminea (straw-coloured). sti. 1ft. to 1}ft. long, and, as well 
as the rachis, stramineous. fronds narrow-deltoid, lft. to * 
long ; pinne ascending, the lowest much the largest, deltoid, 
compound lower pinnules on both sides, the others lanceola 
lyin. to 2in. broad, cut down to the rachis or a narrow i 
segments lanceolate, narrowed to a point, the sterile ones sharply 
and closely dentate, upper ones growing gradually shorter. sori 
falling short of the tips of the segments. Chili. SYN. P. crispa 
(of gardens). : ; 
P. sulcata (furrowed). A form of P. quadriaurita. 
trembling).* sti. lft. long, strong, erect, 
(trembling). i or more, long ng, 
obes, which are 
ften v com) d, sometimes lft. 
bipinnate. sori copious, sometimes Siting up the whole 
Pteris—continued. 
except the midrib. Australia and New Zealand, 1820. Green- 
house. See Fig. 316. (H.S. F. 1208.) The variety Ki 
has its ultimate segments large, sometimes ltin. long, 
jin. broad, not toothed. j 
P, tricolor (three-coloured). 
tricolor. 
A synonym of P. aspericaulis 
. A synonym of P. Milneana 
Fig. 316. PINNA OF PTERIS TREMULA, 
P. umbrosa (shady).” ngs ag be 1sft. long, erect, bright reddish- 
o 
ronds , bin. to 12in. b with a 
—— tom ad — six to nine lateral Se anal which 
run down the stipe at the base, so as to form a broad wing, which 
reaches nearly or quite to the next node; ——— to 
6in. long, An. to fin. broad, finel in 
forked. 
pinnules. Australia, 1823. Greenhouse. (H. S. F. 1308.) 
P. undulata (waved). A variety of P. comans. 
P. Vespertilionis (bat-winged). A synonym of P. incisa. 
P. vittata (striped). A variety of P. grandifolia. 
PTERIUM. A synonym of Lamarckia. 
PTEROCARPUS (from pteron, a wing, and karpos, 
a fruit; the pods are girded by a broad wing). Orb. 
Leguminose. A genus comprising about fifteen species 
of unarmed, stove trees, inhabiting the tropical parts 
of Asia, Africa, and America. Flowers yellow, rarely 
mixed with violet and white, often showy, disposed in 
simple or paniculate, loose, axillary or terminal racemes ; 
calyx turbinate at base; standard orbicular or broadly 
ovate; wings oblique, obovate or oblong; petals glabrous. 
Pods compressed, indehiscent, orbiculate or ovate, rarely 
oval-oblong. Leaves alternate, impari-pinnate; leaflets 
alternate or irregularly opposite, exstipellate. For culture 
of the under-mentioned species, see Da! 
P. dalbergioides (Dalbergia-like). A synonym of P. indicus. 
Draco Dragon Gum-tree. fl. yellow, in paniculate 
igh — A y — loose. May. Pods Lin. in diameter. 
L, leaflets 2in. to 4in. long, — or oblong, acuminate, shining. 
h. 30ft. Tropical America, 
