Ranunculacem.l MEXICO. 275 



1. Woodwardia prolifera, n. sp. ; fronde triangulari-ovata pinnata, pinnis lato-lanceo- 

 latis acuminatis profunde pinnatifidis basi valde inasqualibus cuneatis brevi-petiolatis 

 supra proliferis subtus prascipue ad costam paleaceo-squamosis, laciniis lanceolatis acutis 

 reticulatim venosis superne serrulatis. (Tab. LVII.) — W. orientalist Sw. Syn. Fit. p. 

 117 et 315 — Hab. Loo Choo. 



This is very distinct from any Woodwardia we have had the opportunity of seeing. It can scarcely be the 

 W. orientalis of Swartz (a native of Japan) of which the pinnae are described as sinuato-pinnatifid. The 

 reticulation on the laciniee is certainly more copious in our plant than in any other of the genus ; but its 

 most remarkable feature arises from the copious scaly buds, each bearing a young frond, which appear on the 

 upper side of the laciniae, and always from a certain point of the nervation, in the upper angle of the costal 

 nerves, occasioning a corresponding depression on the under side. Our specimens are almost entirely desti- 

 tute of sori. 



Tab. LVII. Woodwardia prolifera. Fig. I. Upper side of a proliferous Iacinia; fig. 2. Under side of do. 

 1. Davallia ferruginea. Cav— supra, p. 257. 



Ord. LXVI. ALGiE. 



I. Dictyota spinulosa, n. sp. ; fronde lato-lineari dichotoma spiraliter torta mem- 

 branacea olivaceo-fusca minute reticulata disco utrinque margineque spinulosis. — Hab. 

 Loo Choo. 



Frond about a span long, flat, membranaceous, many times dichotomous, £ an inch broad near the base, 2 or 

 3 lines broad in the ultimate shoots, the margins and the whole disc on both sides beset with spinous pro- 

 cesses of the texture of the frond. The reticulation is very minute and peculiar, consisting of broadish 

 transverse bands and more crowded, and far slenderer longitudinal lines, both equally visible in the dry 

 and in the moist state. 



MEXICO. 



When no habitat is mentioned, the specimens are understood to have been collected at Tepic. We must 

 remark, however, that there seems to have been a considerable mixture of the specimens collected at Loo 

 Choo and Bonin with those of Mexico, the same species occasionally occurring in both packets. Thus nearly 

 all the specimens of what we have called Euonymus Japonicus and Elceocarpus photinicefolius, are in the 

 Mexican collection ; and on the other hand, we found a bad specimen of Gordonia Lasianthus among the 

 Loo Choo collection, although we thought it unnecessary to notice it. 



Ord. I. RANUNCULACE^E. Juu. 



1. Clematis sericea. H. B.K. Nov. Gen. o. p. 37; De Cand. Prod. I. p. 5; Schlecht. 

 in Linn. 5. p. 209, et 6. p. 416. 



