Fig. 39. STILOPHORA LYNGBYJ5I. 
Colour, A pale olive-brown, or foxy ; becoming greenish olive in drying. 
Substance. Membranaceous ; crisp at first and fragile, soon turning soft. 
Character of Frond. Thread-shaped {filiform), tufted, branched. Branching profuse, almost 
always forked {dichotomous) ; spreading ; the tips very fine. 
Measurement. From 2 to 4 feet long, or more. 
Fructification. Minute seeds {spores) in convex, wart-like clusters, in lines encircling the 
branches ; not nearly so thickly set as those of S. rhizodes. 
Habitat. Land-locked bays on the coasts of Scotland and Ireland ; dredged in from 4 to 10 
fathom water. 
*S. rhizodes always grows within tide-marks. 8. Lynghyeei is only obtained from deep 
water. Dr. Harvey doubts of their being two distinct species. 
Fig. 40. DICTYOSIPHON FCENICULACEUS. 
Colour. A greenish or brownish olive, according to age. 
Substance. Membranaceous ; soft ; slippery to the touch when young, yet not gelatinous. 
Character of Frond, Thread-shaped {filiform), tufted very fine. Very much branched and 
bushy. Main stem set with long, alternate branches on each side ; branches re- 
branched once or twice ; becoming hair-like at last. When young covered with 
colourless cobweb-like hairs, which die off afterwards. 
Measurement. From 1 to many feet long. 
Fructification. Minute seeds {spores) either solitary or clustered ; scattered over the surface 
of the frond. 
Habitat. Our coasts generally. Between tide-marks in pools, on rocks, or on other Algse. 
In general appearance like Desmarestia viridis, but the exactly opposite branching of that, 
and the alternate of this, perfectly distinguish the one from the other. The slippery feeling 
of young plants is produced by the hairs. 
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