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THE SEAWEEDS 
produced. All the older leaves and leaflets are more or less thickly muri- 
cated with minute ciliary processes, giving a rough feel to the surface. In 
the broader varieties the nerve is very faint, and sometimes disappears 
altogether ; in the narrow or more compound it can usually he traced quite 
to the apex. Fruits of both kinds are scattered over the surface ; the cysto- 
carps being solitary, and the stichidia collected in little tufts. The cysto- 
carps are ovate, shortly stipitate, with thick, cellular walls, and they contain 
a tuft of pear-shaped spores. The stichidia are narrow-obovate or 
spathulate, and contain a few tetraspores, in a double or single row. The 
colour is a deep purplish-red, turning brown in drying. The substance is 
rather rigidly membranous. The young frond scarcely adheres to paper in 
drying. 
This is the original species upon which the genus Lenormandia was 
founded, but owing to its extreme variability, it is possible that L. Muelleri 
is merely one of its extremely divaricated forms. The Tasmanian L. 
marginal a, is a very well-marked species, and not to be confused with the 
former, or the New Zealand form L. chauvinii. 
South Australia (Pennington Bay (Kangaroo Island)), West Australia. 
Lenormandia pardalis J. Agardh. 
Frond membranaceous, proliferous from the margin, or near the costa, 
irregularly branched; the secondary phyllodia subovate when young, 
lanceolate-oblong, apices round, margin entire. Stichidia elliptical, a few 
(three to six) grouped in minute fascicles, forming almost longitudinal 
lines, sessile. The primary phyllodia 15 cm. to 25 cm. long, 2 mm. to 
4 mm. wide. Secondary phyllodia 10 cm. to 20 cm. long. 
South Australia (Encounter Bay). 
Lenormandia prolifera (Ag.) J. Agardh. 
= Rytiphloea simplicifolia Harvey. 
Frond compressed or terete, dendroid, pinnate, transversely striate, 
corticated; the axis articulated, composed of a circle of large oblong cells 
surrounding a central cell ; the periphery of several rows of small, angular, 
mostly coloured cells. Cystocarps ovate, containing a tuft of pear-shaped 
spores. Stichidia containing tripartite tetraspores. 
Attachment discoid. Primary leaf from 2 cm. to 15 cm. long, from 2 mm. 
to 6 mm. wide, quite flat or slightly hollow on one side, very obtuse, tapering 
at base into a short stipe, traversed by a slender midrib, from which 
numerous similar leaves, one to three or more inches in length, are thrown 
out proliferously without any definite order. These, in like manner, bear a 
third, and those a fourth series of similar leaves, until there results (in old 
specimens) a bushy, much compounded frond, made up of simple, linear 
leaflets. All the leaflets are of similar shape; their apices are minutely 
inflexed or involute ; the margin minutely raised towards one surface ; the 
membrane is thickish, opaque, not glossy, and appears under a pocket lens 
as if delicately and very closely transversely striate. Stichidia linear- 
ianceolate, acute, inflexed or involute, closely placed or tufted along the 
