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THE GEELONG NATURALIST. 47 
To describe why the various genera and species of Algz are so 
named is beyond me; I will, however, offer a few suggestions thereon. 
Thave mentioned that the names of the classes, orders, genera and 
Species are chiefly of Greek derivation. Beginning with the lowest 
forms, the Chlorospermez, we have the order Ulva from Ul, Celtic 
word for water. In this order we have the genus Lactuca (Latin 
for lettuce). 
Another order is named Confervacee (frond’s filamentous) with a 
genus Cladophora (branch-bearing) and a species Feredayi (named 
after a Tasmanian clergyman). Belonging to the same order is the 
genus Enteromorpha  (intestine-like). Another order is named 
Siphonacee, (the Algs being tubular), with its rare genus Bryopsis, 
(£rom Bruon, moss), and its choice species, Plumosa, fairly common at 
Geelong. 
, Passing to the Rhodospermee, we have the order Ceramica (from 
their waxen appearance), with the. genera Callithamnion, (beautiful 
little shrub), Ptilota (feather-weed), Spyridea (basket-weed), Rhodo- 
Phyllis (rose-leaved), Schizymenia (cloven membrane), Kalymenia 
d membrane), Rhodymenia (ved membrane), and Dasya 
airy). 
Some genera and a large number of species are named in honour 
of individuals, eg. genus Grifithsia, after Mrs. Griffiths, Torquay; 
Ballia, after Miss Ball; Laurencia, after M. de la Lauriencia, a French 
naturalist; Delesseria, in honor of Mons. Delessert, a French botanist 
and naturalist. 
Many are named after Harvey, Agardh, Mueller, and Wilson, all 
prominent botanists and algologists. 3 
The lecturer then shewed- several Specimens to illustrate the 
System of naming and classifying, pointing out the appropriateness of 
the names given, notably Hypnea Episcopalis, from hypnum moss, 
and Episcopalis, with reference to the resemblance of the developing 
frond toa Bishop's staff; and Dietyurus Quercifolius, from diktuon, a 
fishing net, quercus, an oak, and folium a leaf. He then made some 
impromptu remarks in the course of which he recommended to 
beginners Mr. Hibberd's * Sea-weed Collector,” and “Common Sea- 
weeds,” by Mrs. Lane Clark, and concluded with the quotation :— 
“ Not lost the time in sea-side ramble spent; 
Braced is the frame, and mental health is gained : 
Knowledge obtained of Him who made the deep, 
And blissful love acquired of Nature's works.” 
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