226 SAXIFRAGACEE., 
diffusely branched, furnished with glanduliferous hairs. Stems 
erect, branched at the base; branches elongated, fastigiate. 
Radical leaves on long petioles, somewhat reniform at the base ; 
lobes obtuse ; cauline leaves all petiolate: upper cauline leaves 
undivided, acute at both ends: lower cauline ones tripartite ; 
lobes acute. Peduncles and calyxes clothed with viscid down. 
Flowers white, much larger than those of S. tridactylites. Petals 
triple nerved; nerves simple. 
Rock Saxifrage. Fl. April, May. Clt. 1752. Pl. d tol ft. 
169 S. rripacrytires (Lin. spec. 578.) primordial leaves 
entire, and spatulate: cauline ones quinquefid or trifid; calyx 
urn-formed: with very short, obtuse segments; petals obovate, 
truncate at the apex. ©.H. Native of Europe, in dry sandy 
places, and on walls and roofs of houses ; plentiful in Britain. 
Curt. lond. fasc. 2. t. 28. Smith, engl. bot. t. 501. Sternb. 
sax. p. 44. t 17. and in Sturm, deutschl. fl. 33. no. 15. S. 
annua, Lapeyr. pyr. sax. p. 53. Tridactylites annua, Haw. enum. 
sax. p. 21.—Moris. hist. 3. p. 478. sect. 12. t. 9. f. 31. Stems 
erect, branched, flexuous, many-flowered, furnished with short 
glanduliferous hairs. Radical leaves crowded. Petioles ciliated 
with glands. Peduncles and calyxes clothed with viscid down. 
Flowers small, white; petals with 3 simple nerves, 
Var. B, extlis (Gaudin, fl. helv. 3. p. 116.) leaves all oblong- 
spatulate; stem simple, few-flowered. ©.H. Native of Swit- 
zerland, Italy, France, &c. S. exilis, Poll. veron. 2. p. 31. 
Three-fingered-leaved or Wall Saxifrage. Fl. April, May. 
Britain. PJ. 4 to 4 foot. 
170 S. contrave’rsa (Sternb. sax. p. 43. t. 16.) plant beset 
with glanduliferous viscid hairs; radical leaves crowded, 3-5- 
toothed, or sometimes nearly entire; calycine lobes ovate, 
shorter than the tube at maturity ; petals obcordate, larger than 
the calyx ; styles much divaricate, longer than the calyx. ©. 
H. Native of the Alps of Lapland, Norway, Savoy, Carinthia, 
Piedmont, Dauphiny, Carpathian Mountains, and the Pyrenees. 
S. tridactylites 3, Lin. spec. ed. 1. p. 404. S. adscéndens, Lin. 
spec. p. 579. mant. p. 884. All. pedem. p. 1537. t. 22. £ 3. 
Wulf. in Jacq. coll. 1. p. 197. t. 11-12. f. 1-2. S. petre'a, 
Gunn. norv. p. 427. t. 9. f. 1-3. exclusive of the syn. and 
descript. of Lin. Fi. dan. t. 680. D.C. fi. fr. 4. p. 370. S. 
hypnoides, Scop. carn. 499. t.16. Gaudin, fl. helv. 3. p. 117. 
S. Scopolii, Vill. dauph. 4. p. 673. S. petree‘a integrifolia, 
Gaudin, in Meisn. anz. 1818. p. 67. fl. helv. 3. p. 117. var. B. 
S, contravérsa a and ß, Ser. in D. C. prod. 4. p. 34. S. tridác- 
tylìtes 8, alpícola, D. Don, in Lin. trans. 13. p. 441. Tridac- 
tylites petree‘a, Haw. enum. sax. p. 22. Flowers corymbose, 
white, twice the size of those of S. tridactylites. The plant is 
much larger than. S. tridactylites; the radical leaves more 
crowded: the cauline ones more numerous, and for the most 
part 5-toothed. 
Var. B, littoralis (Ser. in D. C. prod. 4. p. 34.) plant small, 
very leafy ; leaves usually quinquefid; petals entire. ©. H. 
In humid places on the banks of Lake Leman, S. petræ'a lit- 
toralis ò, Gaudin. fl. helv. 3. p. 117. 
Var. y, Bellardiana (Ser. 1. c.) flowers usually twin, nearly 
sessile, in the heart of the crenulated leaves. ©. H. S. pe- 
tree‘a, Bellardi, Gaudin. in Meisn. anz. 1818. p. 67. fl. helv. 3. 
p- 118. S. Bellardi, All. pedem. no. 1356. t. 88. f. 1. Sternb. 
rev. sax. p. 20. 
Contrary-turned Saxifrage. Fl. May, Ju. Clt. 1800. Pl. + ft. 
Cult. Saxifraga is a most extensive genus of pretty alpine 
plants, the greater part of which are well adapted for rockwork, 
or to be grown on the sides of naked banks to hide the surface. 
Many of the more rare and tender kinds require to be grown in 
pots, in light sandy soil, and placed among other alpine plants, 
so that they may be protected by a frame in winter. The species 
belonging to sections Micrdnthes and Hirculus grow best in a 
I. SAXIFRAGA. 
Il, Ertocynia. III. LEPTARRHENA. 
peat soil, which should be kept rather moist. The species be- 
longing to the section Porphireon are so very pretty little plants 
as to be worth growing in pots for ornament, being clothed with 
elegant little red flowers early in spring: a mixture of peat and 
sand suits them well. S. sarmentdsa does best in a greenhouse, 
All the species are easily increased by dividing. <S. ligulata, 
cordif lia, and crassifolia are strong growing plants, well fitted 
for ornamenting flower-borders. 
Il. ERIOGY'’NIA (from epioy, erion, wool, and yuvn, gyne, 
a female; in reference to the ovaries being woolly). Hook. in 
fl. bor. amer. 1. p. 255. t. 88. 
Lin. syst. Icoséndria, Tetra-Hexagynia. Calyx turbinate, 
5-cleft. Petals 5, hardly unguiculate. Stamens 20, inserted in 
the mouth of the tube, monadelphous at the base ; anthers 2- 
celled, roundish. Ovaries 4-6, distinct from the calyx, and from 
each other, but connected by dense wool. Styles elongated, 
deciduous, filiform. Carpels 4-6, distinct, oblong, acute, re- 
curved at the apex, opening lengthwise inside. Seeds dust- 
formed, pendulous, inserted towards the tops of the valves at 
the margins. Albumen wanting.—A perennial herb, native of 
North America, with the habit almost of Saaifraga cerato- 
philla ; stoloniferous. Leaves very stiff, coriaceous, l-nerved, 
quite glabrous, trifid; segments trifid or quadrifid: lobules 
linear. Flowers white, disposed in racemes, for the most part 
bracteate ; pedicels 1-flowered. a4 
1 E. pectina‘ta (Hook. 1.c.). %.H. Native of Behring’s 
Straits ; height of land upon the Rocky Mountains, on the west 
side, near the sources of the Columbia. Saxifraga pectinata, 
Pursh, fl. amer. sept. 1. p. 312. Sterile stems tufted, decum- 
bent, stiff, stoloniferous. Lower leaves rosulate, with 3 trifid 
segments: lower cauline ones with 3 bifid segments: upper 
cauline ones or bracteas trifid. 
Pectinated-leaved Eriogynia. PI. 4 foot. 
Cult. This isa beautiful alpine plant. It should be grown 
in pots, in a mixture of peat and sand; and will be easily in- 
creased by dividing, or by cuttings. 
HI. LEPTARRHE'NA (from Xerroe, leptos, slender, and 
aġpnv, arrhen, strong; plant strong and slender). R. Br. in 
chlam. melv. p. 15. append. to Parry’s lst voy. p. 273. D.C. 
prod. 4. p. 48. Hook. fl. bor. amer. 1. p. 256. t. 89. 
Lin. syst. Decándria, Digynia. Calyx campanulate, short, 
5-cleft (f. 47. a.), with a broad tube. Stamens 10, inserted in 
the throat of the tube; anthers 1-celled (f. 47. c.), 2-valved. 
Petals 5 (f. 47. b.), linear. Ovaries 2 (f. 47. e.), free, tapering 
into the styles, which are permanent. Stigmas obtuse. Carpella 
2, opening lengthwise on the inside (f. 47. d.). Seeds scobiform, 
erect, inserted in the margins of the valves.—Herbs with a habit 
FIG. 47. 
between Pyrola and those species 
of Saxifraga belonging to section 
Micranthes; inhabitants of cold 
places of North America. Scapes 
naked. Flowers disposed in ra- 
cemose panicles. Leaves coria- 
ceous, permanent, entire, coarsely 
serrated; petioles broad and 
sheathing. 
1 L. pyrowroria (R. Br. in 
Parry’s 1st voy. append. p. 273. 
Hook. l.c.) Y%.H. Native of 
the Island of Unalaschka, Beh- 
ring’s Straits, height of land on 
the west side of the Rocky Moun- 
tains, in lat. 52°. L. amplexi- 
