136 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.3 



Rhodymenia calif ornica is easily distinguished from R. palmettiformis 

 by the very short or almost absent stipe. It shows little tendency toward a 

 palmate t5'pe of division, and the dichotomous segments are conspicuously 

 of a uniform width, 2.5-4 mm. Plants do not average so small as Kylin's 

 types, but more commonly are 6-8 cm. high. The thickness of the blades 

 averages between 125 and 150 |i. 



Distribution. — Specimens have been seen from San Diego, Laguna 

 Beach, Anaheim Landing, San Pedro, Carmel Bay, and Monterey, Cali- 

 fornia. 



(20) RHODYMENIA LINIFORMIS Okam., Icon, of Jap. Algae, 

 vol. VII (1934), no. IV, p. 34, pi. 318, figs. 7-14. 



"Plant belonging under the section Palmettae De Toni in the vicinity 

 of R. palmetta or R. ligulata." — Okamura. 



Distribution. — The type from Enoshima, Japan. 



(21) RHODYMENIA FOLIIFERA Harv., Phyc. Austr. (1863) 

 V: Syn. p. xl, n. 508; J. Ag., Epic, p. 331; Kylin, Die Flori- 

 deenord. Rhodymen. (1931), p. 21, Taf. 7, fig. 17. 



The type was not figured with the description of the species, but Kylin 

 gives a photograph of "one of Harvey's original specimens." There is a 

 remarkable resemblance between this illustration and some specimens of 

 R. calif ornica. Harvey says, "Near R. palmetta but remarkably different 

 when in fruit." 



Distribution. — Australia; Tasmania; New Zealand. 



(22) RHODYMENIA NOVAZELANDICA sp. nov. 



Plate 23, Fig. 30 

 Frons e disco simplici, 6-10 cm. alta, stipitata, ramos proxime usque ad 1.5 cm. 

 super discum emittentibus, iis mox decumbentibus aut laminas producentibus; 

 laminis anguste cuneatis, dichotomis, segmentis angustis, 1.5-2.5 mm. latis, apicibus 

 attenuatis obtusis rotundatis, 100-160 \i crassis, cellulis corticalibus superficie 

 elongatis; sori tetrasporangiiferis parvis, apicalibus in segmentis ultimis trans- 

 forraationes negligentes corticales efEcientibus. Cystocarpiis nondum visis. 



Fronds from a simple, discoid holdfast 6-10 cm. high, stipitate, pro- 

 ducing stoloniferous branches from immediately above the holdfast to 

 1^2 cm. above, these turning down or developing blades; blades dichoto- 

 mous, narrowly cuneate, the segments narrow, 1.5-2.5 mm. broad, with 

 attenuated, rounded apices, 100-160 |i thick with elongated cortical cells; 

 tetrasporic sori small, in apices of ultimate segments, causing only minor 

 modification of cortex. Cystocarps unknown. 



