106 University of California Publications in Botany \yoi.. 6 



Scinaia hormoides sp. nov. 



Plate 12, figs. 33-35; plate 13, figs. 36, 37. 



Plant deep red purple (to brownish when dried), 4-6 cm. high, 

 7-8 times dichotomous, with short solid stipe, branches all regularly 

 and uniformly deeply constricted into globular to obovate, at times 

 even oblong, joints, 3 mm. in diameter and 3-10 mm. long; axis barely 

 visible (dried) ; cystocarps scattered, plainly visible; — axial strand 

 distinct, at first of few large parallel tubes, soon re-enforced by slender 

 corticating filaments ; epidermis of large colorless cells, or utricles, and 

 frequent regularly distributed slender colored cells, 1-4 together; 

 utricles flat-topped, 5-7-gonal in surface view (T), nearly square in 

 section, 24-25/^ (R) by 20-22/x (T) ; colored epidermal cells frequent, 

 somewhat distant, but rather regularly placed ; hypodermis in one layer 

 of distant, irregular, obpyriform cells, 8-lOju, in diameter; corticating 

 layer thin, of sparse slender filaments; antheridia in small stellate 

 cluster.s; cystocarps broadly pyriform, globular and abruptly con- 

 tracted outwards, 250-350|U, in each diameter; gonimoblasts slender. 

 very numerous, arising from a few-celled placenta, successively 

 abjointing short ellipsoidal spores ; periderm of 3—4 layers, pseudo- 

 parenchymatous. 



The type of Scinaia hormoides is a specimen collected at Haleiwa 

 on the Island of Oahu, Hawaiian Islands, by J. F. Rock (No. 56 Rock). 

 It was collected in the same locality by Miss Minnie Reed (No. 985) 

 and a specimen preserved in formalin solution is available for study. 

 There is also a specimen in the herbarium of the Bernice Pauahi 

 Bishop IMuseum collected by E. Bailey, at Kahalui on the Island of 

 Maui. What appears to be the same species has been collected on the 

 reef at Puro, Province of La Union, Island of Luzon, Philippine 

 Islands, whence a specimen (Philippine Bureau of Science, No. 13014) 

 has been available through the kindness of Dr. ]\I. A. Howe. 



Scinaia Jiormoides is very closely related to the preceding Scinaia 

 moniliformis, but is of very different aspect due to the different shape 

 of the joints which are shorter and less oblong than in the Australian 

 species. In the most typical specimens of Scinaia hormoides, the 

 joints are nearly globular or more or less pyriform. Some of the joints 

 in a specimen may, however, be nearly as oblong as those of Scinaia 

 moniliformis. The joints in the latter species, however, are always and 

 uniformly oblong. Too few specimens, however, are available to make 

 as full a comparison in this respect as is desirable. The utricles in 

 Scinaia hormoides are nearly square or slightly flattened while those of 

 Scinaia moniliformis are radially elongated. The colored cells of the 

 epidermis are decidedly more numerous in Scinaia hormoides than in 

 Scinaia moniliformis. 



