338 
40. SAXIFRAGACE^S. 
iii vast profusion on the wild rocky cliffs of the ravine ; in Lan- 
zarote in beds of Opuntia Tuna L. at a village called El Valle 
on the middle road from Arecife to Aria at least perfectly na- 
turalized; and again, as I believe, in Hierro, and beyond all 
doubt quite wild, on the lofty wooded cliffs up the road called 
Las Vueltas above La Casa Blanca in El Golfo, though I have 
not entirely assured myself of the identity of the Hierran pi. 
with those from Tenerife and Lanzarote. 
Order XL. SAXIFBAGACE^E. 
The Saxifrage Family. 
FI. mostly perfect regular. Cal. 4-5-cleft inferior or superior 
persistent imbricate in bud. Pet. 4-5 veiy rarely 0. Stam. 4 
or 5-8 or 10 free perigynous or hypogynous. Ovary of 2 co- 
herent many-ovulate carpels. Styles 2 (rarely 3-5 ) persistent. 
Fr. a 2-1-celled many-seeded capsule, bursting at the inner su- 
ture. Embryo axile with fleshy albumen. — Shr. or herbs mostly 
per. and alpine with w., p. or y. (rarely b.) scentless A., rarely 
shr. or tr. L. without stip. alternate or opposite. 
Tribe I. HYDRANGEA. 
The Hydrangea Tribe. 
Shr. with opposite simple undivided 1. FI. 5-pet. 10-androus 
2-5-stvled corymbose, the outer and sometimes nearly all often 
sterile or abortive witli enlarged coloured petal-like cal.-teeth 
or sep. Fr. a 2-5-celled caps, or berry. 
1. Hydrangea. FI. mostly of two kinds, fertile and abortive. 
Cal. -tube semiglobose 10-ribbed subtruncate adnate to the 
ov., limb 5- toothed persistent. Pet. regular. Styles 2. 
Caps. 2-celled with indexed valves, many-seeded. Seeds 
reticulate. — Barren 11. with cal.-teeth large dilated and co- 
loured or petal-like, the true pet. and other parts remain- 
ing abortive. 
Tribe II. SAXIFRAGE JE. 
The Saxifrage Tribe. 
Herbs mostlv alpine with alternate very rarely opposite lobcd 
or divided 1. Fl. 5-net. 10-androus 2-styled racemose or pani- 
cled rarely single, all fertilo. Fr. a 2-carpelled caps. 
