192 ALG7E RHODOSPERMEvE. [Nitophyllum. 



leaflike, rising from the midribs of the older leaves. Hook* Br. 

 Fl. v. ilp. 288. E. Bot. t. 1396. 



On rocks and the larger Alga;, not rare ; very fine at Bantry Bay ; 

 Miss Hutchins. And at Larne ; Dr. Drummond. A beautiful spe- 

 cies, distinguished by the lanceolate outline of its proliferous leaves ; 

 in other respects it approaches very near to the following. 



5. D. ruscifolia, Lamour. Ruscus-leaved Delesseria. Frond 

 (originally) linear, oblong, much branched in a proliferous 

 manner ; innovations or leaves oblong or obovate, obtuse, not 

 tapered at base, rising from the midribs of the older fronds. 

 Hook. Br. Ft. v. ii. p. 286. Fucus ruscifolius, E. Bot. t. 1397. 



Rocks in the sea, rather rare. Bantry bay ; Miss Hutchins. Mil- 

 town Malbay, Kilkee and Wicklow, &c. ; W. H. Harvey. Differs 

 from the last in being of rather a darker colour and less delicate sub- 

 stance, with short obtuse leaves ; but this latter character is far from 

 invariable. 



37. NITOPHYLLUM. Grev. Nitophyllum. 



Frond plane, delicately membranaceous, expanded, rose co- 

 loured, reticulated, wholly without veins, or with slight 

 vague ones toward the base. Fructification : hemispherical 

 capsules imbedded in the substance of the frond, and ternate 

 granules forming distinct scattered spots. Name; a Latin 

 and Greek hybrid, from nitor, to shine, and 0vXAoi/, a leaf. 



1. N. ocellatum, Grev. Ocellated Nitophyllum. Frond with 

 rather a roundish outline, much branched in a dichotomous 

 manner ; segments linear, obtuse ; spots of granules " in the 

 segments." Grev. Hook. Br. FL. v. ii. p. 287. D. ocell 

 Grev. Crypt, t. 347. 



Rare. Bantry bay ; Miss Hutchins. 46 inches long, generally 

 cut into numerous linear segments. Though this species appears, at 

 first sight, very distinct, if we regard only typical specimens (such as 

 are figured in Dr. Greville's plate), yet I have seen so many varieties, 

 bordering more or less on N. punctatum, that, I greatly fear, this must 

 only be considered a curious variety of that species, 



2. N. punctatum, Grev. Spotted Nitophyllum. Frond very 

 thin and delicate, destitute of nervures, cleft into two or three 

 principal segments, which are more or less cleft into numerous, 

 narrow forked lacinia? ; spots of granules scattered over the 

 whole frond, large. Hook. Br. FL v. ii. p. 287. Fucus punc- 

 tatus. E. Bot. t. 1575. Turn. Hist. t. 71. 



On various Algae. Lame (very fine) ; Dr. Drummond. Bantry 

 bay ; Miss Hutchins. Miltown Malbay, and Kilkee ; W. H. Harvey. 

 3 inches long, segments broad, cleft nearly to the base ; spots of 

 granules large and conspicuous. 



i 3 i -V* " lvoideum > Hook - Ulva-like Nitophyllum. Frond 

 tiuckisn but tender, veinless, roundish but very irregular in 



