Galaxaura obtusata (J.Ellis & Sol.) J.V.Lamour.

NEW YORK
BOTANICAL
GARDEN
CHINESE MARINE ALGAE
NEW YORK
BOTANICAL
GARDEN
HERB. C. K. TSENG
Oalaxanra Ohtunata ?K31. Sal?]_PltXm
De/.G ®li ® T ? Loc. Hong Kong and Vicinity,
Coll. Tseng, C. K. No. HO 54 Date JUN1?I936
NEW YORK BOTANICAL GARDEN
02181100
CHINESE MARINE ALGAE
HERB. C. K. TSENG
? . ?5 ? ' f'-' . ,	WE?W YORK
Oalaxaura' obtusata
iBll. Sol.) lux.
¨oc. Hainan & ffe* g Til i*ś-1 aii
Collector Tseng, C. K.	104
Determined by C.ir.Paca®- Dale ?Juae 8. 1954
05
05
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Galaxaura obtusata (Ell. et Sol.) Lmx. Bull.
Fan Mem.' Inst. Biol: 7: 242. Mr. 1937
ţ'G^& 5-/4.30. Galaxaura obtusata (Ell. et Sol.) Lmx.
1 c., p. 262; Kuetzing, I.e., p. 529; J. Agardh, I.e., p. 525; Kjellman, I.e., p. 88;
Collins and Hervey, Alg. Bermuda (1917) p. 102; Weber van Bosse, I.e., p. 220;
Bfirgesen, Mar. Alg. fr. Canary Is., Ill (1927) p. 171, figs. 40-41, pi. 45; Yamada,
Some Jap. Alg. IV (1932) p. 274, pi. 7; Tanaka, i.e., p. 171, figs. 40-41, pi. 45.
Corallina obtusata Ellis et Solander, I.e., p.113, pi. 22, fig. 2.
Two sets of very young specimens are referable to this
species. They are only 4-6 times regularly dichotomously branched,
attaining a height of 7 cm. The fragile thallus is shortly stalked
and distinctly articulate. The internodes are cylindrical or elliptical
obovoid, to 4 mm. diam. and 2 cm. long. The assimilating tissue
consists of two layers of parenchymatous cells bound by a layer of
small obconical or lens-shaped cells which adhere compactly to each
other forming an epidermal layer, appearing 5-6 sided in surface
view. The central axis consists of slender, medullary filaments,
running very loosely. The plant is light rosy red in color.
HAB. On rocks in the lower litoral belt. Tsing lan Kang,
Hainan, in June (Tseng 110U); Little Hong Kong, Hong Kong, in June
(Tseng 2054).
DISTR. West Indies; Florida; Malay Archipelago; Polynesia;
Australia; Japan; Ryukyu; Formosa.
02181100
02181099