276 K. YENDO. 



Wildeinania, bulbopes, sp. nov. 



== Porphyra umbilicalis var. vulgaris a Rupr.. 

 Tange des Ochot. Meeres, p. 394. 



(Plate XIII. Figs. 1-9.) 



Fronde distromatica, monoica, ovata vel elliptica, breviter 

 stipitata, basi rotundata, marginibus integerrimis undulatis, 

 apice sœpe divisa, stipite inßato. Cellulis vegetativis ob- 

 scure seriatis, rotundato-angulatis vel elliplicis, in sectione 

 transversali frondis lumen cellulare verticaliter rotundato- 

 subrectangulare prœbentibus, parietibus externis cr assis, eras- 

 situdine altitudinem luminis cellularis œquantibus. Spermo- 

 goniis marginalibus sensim introrsum cum carposporangiis 

 admixtis. 



Habit. In Oceano Pacifico septentrionali, ad oras insulœ 

 "Shimushu" (Yendo) et ad Camtschaticam (Ruprecht). 



Frond distromatic, oblong-obovate or obcuneate, 7 — 15 cm. 

 high, more or less attenuated at the apex, mostly simple, but 

 not seldom bilobed; margin entire, undulated; base round, abruptly 

 narrowed to a short inflated stipe; in some older individuals the 

 inflation is found extending beyond the stipe into the laminai 

 portion. Vegetative cells in surface view, elliptical or roundish 

 rectangular, 9 — 10 f.i X 6 — 9 ■«» more or less serially arranged, 

 but without any fixed direction. Height of cells 8 — 10 [i, thickness 

 of frond 50 — 55^. Monœceous; antheridial area assuming the 

 marginal portion of the upper part of frond, gradually fading 

 inwards to the carpogonal area. 



The cross sections of the frond at the inflated portion show 

 the cells in clavate form, the broader ends directed towards the peri- 

 phery (Fig. 5): the total thickness of the frond measures 70—80 <u; 

 the gelatinous matrix much thicker inside. The longitudinal 



