296 HARVEY’S ILLUSTRATIONS, 
(n. 224.) — This differs from-Ditassa chiefly in the bifid outer 
coronal lacinize of the flowers. 
129 (1) Sarcostemma Bonariense (Hook. & Arn.) ; ramis 
inarticulatis pedunculoque glabris, foliis lineari-oblongis basi 
obtusis apice in cuspidem subiter attenuatis subtus ad costam 
precipue puberulis, pedicellis calyce corollaque sericeo-pub- 
escentibus.— Buenos Ayres. Tweedie.—Peduncles equal in 
length with the leaf. Stigma apiculate, apiculus emarginate. 
Outer corona small, annuliform and entire. Nearly allied 
to S. pubescens and S. Cumanense, H. B. K.—* This with 
the other S. American species scarcely agree with the true 
Sarcostemma in the form and origin of the exterior corona 
which in this is only an elevated margin to the tube of the 
corolla, while in the true Sarcostemma it is distinct from the 
corola. In other respects, save in the emarginate stigma 
of our plant, they all accord in generic structure.” Wight, 
MSS. 
( To be continued.) 
(Tas. CXXXVIIL—CXXXIKX.) 
ALGOLOGICAL ILLUSTRATIONS. 
Bv Wirrraw H. Harvey, Ese. 
No. L-REMARKS ON SOME BRITISH ALGJE, AND 
DESCRIPTIONS OF NEW SPECIES RECENTLY 
ADDED TO OUR FLORA. 
LAMINARIEZS. Grev. 
l. Laminaria debilis. Ag. Syst. v. i. p. 120. Grev. 
Scot. Crypt. Fl. t. 277. Grev. Alg. Brit. p. 85. t. 5. Hook. 
Brit. Fl. v. ii. p. 272. Chalmers, Alg. Scot. N. 39. 
