220 MISS E. $. BARTON ОХ THE GENUS TURBINARIA. 
I can find only one species, viz. T. conoides, but there are two sheets, оп one of which 
there is no writing whatever. The latter may be the one referred to by Dawson Turner, 
but the plant is certainly not 7. ornata. 
8. TURBINARIA GRACILIS, Sond. in Bot. Zeit. 1845, p. 52, её Alg. Preiss. p. 18. Caulis 
subramosus, ramis retroflexis, foliis vesiculosis spheericis, apice obtuso, membrana 
lata eximie dentata coronatis, receptaculis axillaribus ramosis.— Kfz. Tab. Phye. 
vol. x. tab. 70. қ: 
Hab. Ad oras occident. Novee Hollandiæ, Preiss., et ad ins. Houtmann's Abrolhos, 
Р. Brown! Аа flumin. Cygnis, Domina Broome! 
9. Т. conDENSATA, Sond. in Kütz. Tab. Phyc. vol. x. р. 25, tab. 69. fig. 2. ` Caulis ramosus, 
ramis erectis vesiculis subeampanulatis, lamina eximie dentata, petiolo brevi- 
filiformi ; receptaculis racemosis oblongis tuberculosis densissime congestis. 
Hab. In mari Chinensi, Herb. Sond. 
Turbinaria is a highly differentiated genus of Fucaceous alge, closely allied to 
Sargassum. It grows, as its name implies, in the form of a cone ; indeed, so much does 
it resemble the fructification of one of the higher plants, that a specimen of 7. Murrayana 
was sent to the Botanical Department of the British Museum as a “ water-logged cone.” 
Since the different species are described in detail in the systematic portion of this paper, 
I propose to limit myself as regards the morphological structure to observations on 
T. conoides, the Linnean type, on which, for the most part, my investigations have been 
made (Pl. LIV. fig. 1). It is à plant growing to about the height of 10 inches. The 
stem, about 4 inch thick, is upright and cylindrical, and, except in the lower part, which 
is bare, is densely crowded with leaves growing closely together all round the stem, thus 
giving the plant its characteristic appearance. Тһе open spaces between the leaves are 
filled in with the reeeptacles, which grow in corymbose clusters from the base of the 
petiole. The roots are branched and grow densely crowded together at the base of the 
stem (T. Murrayana, Pl. LIV. fig. 2). Тһе branching in 7. conoides is monopodial. 
I use the word “leaf” advisedly, although it is a word we are accustomed to connect 
with the appendages of the sporophyte; but these shoots, though belonging to the oophyte 
generation (which so far as we know is alone represented in Badiven); ind therefore not 
in any way homolsgots with the leaves of vascular plants, still both resemble them іп 
form and position, and perform the same office as assimilative organs to the Sargasseze that 
leaves do to land-plants ; and I have ventured therefore to use this word throughout the 
paper when referring to this growth. Oltmanns (Bibliotheca Botanica, Heft no. 14; 
WERE zur PEES der Fucaceen, 1889, p. 56) prefers to use the terms “ Basalspross ” 
and Flachspross in his section of Sargasses (р. 54), but the benefit that is gained by 
having special words for this growth seems to be more than зрання һу Ше 
же confusion that may arise іп the employment of terms so indefinite е 
i ш рана дәве to employ the terms *phyllidium" and *caulidium" when 
p g phyte generation, as opposed to “ phyllome" and “caulome” of the 
