DROSERACEZ. 
neath; capsules acuminated, smoothish. h. S. Native of 
Cayenne in woods. Alsòdea Piparea, Spreng. syst. 1. p. 807. 
Toothed-leaved Piparea. Shrub 5 feet. . 
2 P. MULTIFLORA (Geert. fil. carp. 3. p. 231. t. 224. f. 1.) 
flowers numerous; leaves oblong, acuminated, smooth beneath ; 
capsule rather obtuse, velvety. h.S. Native of Cayenne. 
Many-flowered Piparea. Shrub 5 feet. 
Cult. For propagation and cultivation see Ceranthéra, p. 842. 
Orpver XXII. DROSERA'CEÆ (plants agreeing with Dro- 
sera in many important characters). D.C. Theor. 214. prod. 
1. p. 317. Droséree, Sal. parad. no. 95. 
Calyx of 5 permanent equal sepals (f. 68. c.) imbricate in 
the bud. Petals 5, hypogynous, distinct (f. 67. b. f. 68. a.) or 
constituting a gomopetalous corolla, as in Romanzdnia, alternating 
with the sepals, usually marcescent. Stamens free, permanent, 
sometimes equal in number to the petals (f. 67.), when this is 
the case they alternate with them, sometimes double, triple, or 
quadruple that number (f. 68.). Anthers 2-celled, birimose. 
Ovary 1, sessile (f. 67. e. f. 68. c.). Styles solitary (f. 68.) 3 (f. 
67. b.) 5, sometimes joined at the base, sometimes distinct, divided 
at the apex (f. 67. b.), rarely simple. Capsule 1-3-celled, 3 (f. 67. 
g.) 5 (f. 68. c.) valved; valves bent inwards more or less at the 
edges, and opening from the top, sometimes with a seminiferous 
nerve in the middle of each valve, sometimes only bearing the 
seeds at the base of the valves. Seeds disposed in two ‘rows 
along the middle nerve, or crowded at the bottom of the capsule ; 
they are ovate, shining, naked, or wrapped in a thin follicular 
arillus. Albumen cartilaginous or fleshy. Embryo straight, 
slender, with thickish cotyledons, and an obtuse radicle which is 
turned towards the hilum. This order contains but a small 
group of plants, inhabitants of bogs, marshes, or inundated 
grounds ; they are remarkable for the abundance of glandular hairs 
with which all parts of the herbs are usually clothed ; sometimes, 
though rarely, the plants are extremely smooth, as in Parndssia. 
They are all perennial evergreen herbs, only 2 of which are in any 
way frutescent. The leaves are alternate, the young. ones are 
always rolled up in a circinnate manner, so remarkable in ferns. 
The petioles are usually furnished with stipular hairs at the base. 
The young peduncles are usually rolled up in a circinnate man- 
ner. The flowers are blue, purple, yellow, white, or tinged with 
red. The medicinal properties of the plants appear to be trifling ; 
the leaves of all have the power of curdling milk. The order 
differs from Violarize in the styles being seldom solitary, in the 
leaves being rolled up in a circinnate manner, before expan- 
sion not involute. It differs from Polygalee in the flowers being 
regular, not irregular, in the capsules being many-seeded, not 
1-2-seeded, as well as in the leaves being stipulate, not exsti- 
pulate It differs from all the neighbouring orders in the re- 
markable habit of plants of which Drésera, Dion@'a, and Par- 
nassia give a very good idea. It is almost impossible to intro- 
duce seeds in a living state. 
Synopsis of the genera. 
1 Dro’sera. Sepals and petals 5 (f. 67. c.) without appendages. 
Stamens 5. Styles 3 (f. 67. b.) 5,2 or many-parted. Bog plants, 
ornamented with red irritable glandular hairs. 
— 843 
I. Drosera. 
2 Axprova’nps. Sepals and petals 5, without appendages. 
Stamens 5. Styles 5, short, filiform. Stigmas obtuse. A 
floating water plant, with whorled leaves, having a bladdery com- 
plicated limb. 
3 Romanzo wia. Sepals 5, connected at the base. Petals 5, 
joined into a 5-cleft deciduous corolla. Stamens 5, inserted at 
the bottom of the tube. A plant with kidney-shaped toothed 
leaves. 
4 By'suis. Sepals and petals 5, without appendages. Sta- 
mens 5. Style 1, filiform. Stigma 2-lobed. A bog plant with 
linear leaves ornamented with glandular hairs. 
5 Rori’puta. Sepals and petals 5, without appendages. Sta- 
mens 5. Style 1. Stigma 3-lobed. A small bog shrub, with 
linear leaves, ciliated with glandular hairs. . 
6 DrosorHyY'LLUM. Sepals and petals 5, with the claws ap- 
proximate. Stamens 10. Styles 5, filiform. A small shrub 
with linear leaves, beset with stipitate glands. 
7 Dionz'a. Sepals and petals 5 (f. 68.a.). Stamens 10-20. 
Style 1 (f. 68.). Stigma orbicular (f. 68.). A smooth bog 
plant, with 2-lobed irritable leaves, which are ciliated on the 
margins. 
8 Parna’ssta. Sepals and petals 5. 
mens 5, these end in glandular bristles. 
Smooth bog herbs with roundish leaves. 
Scales or abortive sta- 
Stigmas 4, sessile. - 
I. DRO’SERA (from cpocepoc, droseros, dewy; because the 
plants appear as if covered with dew, in consequence of being 
beset with glandular hairs). Lin. gen. 391. Lam. ill. t. 220. 
D.C. prod. 1. p. 317. 
Lin. syst. Pentdndria, Tri-Pentagynia. Sepals and petals 
5 (f. 67. c), not appendiculated. Stamens 5. Styles3 f. 67. b.) 
6-8, 2 or many-parted. Herbs inhabiting boggy sphagnose places. 
Leaves ornamented with reddish irritable glandular hairs, dis- 
charging from their end a drop of viscid acrid fluid. These 
hairs have been thought irritable, so as to contract when touched, 
imprisoning insects somewhat in the manner of Dione’ a Mus- 
cipula. 
Secr. I. Rore’i1a (from ros roris, dew, see Genus). D.C. 
prod. 1. p. 317. Ros-sodlis, Tourn. inst. t. 127. Styles sim- 
ple, or 2-3-parted, with the lobes entire and somewhåt capitate 
at the apex. 
§ 1. Acailes. 
Scapes naked. 
1 D. acav’t1s (Thunb. prod. 57.) leaves oblong, obtuse, 
Stemless. Leaves radical, usually rosulate. 
narrowed at the base; scape very short, l-flowered. Y%. G. 
Native of the Cape of Good Hope. Flowers white. ? 
Stemless Sun-dew. Fil. Jul. Aug. Clt.1821. Pl. § foot. 
2 D. unirro‘ra (Willd. enum. 340.) leaves roundish, on 
short footstalks ; scape short, 1-flowered. Y. F. Native of 
the Straits of Magellan. Flowers white or red. 
One-flowered Sun-dew. Fl. Jul. Aug. Pl. j foot. _ 
3 D. ryemæ'a (D. C. prod. 1. p. 317.) leaves roundish, pel- 
tate, on long footstalks ; stipulas scarious ; scape 1-flowered. 
©. G. Native of New Holland on an island in the entrance to 
Jervis’s Bay. D. pusilla, R. Br. ined. but not of Humboldt. 
Pygmy Sun-dew. Pl. 1 inch. 
4 D. raucirLo'ra (Banks, herb. and D. C. prod. 1. p. 317.) 
leaves obovate-oblong, tapering at the base; scape beset with 
glandular hairs, 1-2-flowered ; petals thrice as large as the 
