228 HYPNUM EXANNULATUM AND H. ADUNCUM. 
Macfadyena corymbosa, Griseb, in Bonplandia, vol. vi. p. 10 (1858); 
Ejusd. Fl. West Ind. Islands, p. 449 (1860); Miers in Proceedings of 
Hort. Soc. vol. iii. p. 200 (1863). : 
Spathodea corymbosa, Vent. Choix, t. 40 (1803) ; De Cand. Prod. 
ix. p. 204 (1846). 
Macfadyena lepidota, Seem. ms. ; Miers, 0. c. 
Groc. Dist. Island of Trinidad (fide De Cand.), West Indies 
Shakespear ! in Mus. Brit.), Isthmus of Panama (Duchassaing! in 
Herb. Griseback). 
EXPLANATION oF Prate VIII. 
Macfadyena corymbosa, from specimens collected in the Isthmus of Panama by 
Duchassaing, and a coloured drawing by hi j in possession of 
Professor Grisebach. Fig. l. Portion of corolla; 2. Stamen; 3. Pistil ; 4. Ripe 
eapsule; 5. Seed. Fig. 1, 2, and 3, slightly magnified ; fig. 4 and 5, natural size. 
HYPNUM EXANNULATUM, Br. Sch., AND H. ADUNCUM, L. 
By W. Carruruers, Esa., F.L.S. 
From the error I made in announcing the first of these plants as new 
to Britain, in the February number of the Journal (p. 55), I have been 
led to examine the two species. They are involved in considerable con- 
fusion, 
Linnzus first described H. aduncum in his ‘Flora Sueciea’ (No. 
879), thus—“ Hypnum caule erectiusculo subramoso, foliis secundis 
recurvatis subulatis, ramulis recurvatis;" he added the specific name 
in the ‘Species Plantarum.’ It is evident that this character includes 
several species. The authors of Bryol. Eur. notice that the Linnea 
name quoted by Hedwig and subsequent writers belongs rather to 
H. uncinatum, H. revolvens, or some form of H. fluitans, thau to 
H. aduncum, Hedw, And in confirmation of their suggestion, I find 
from examination that the specimen in the Linnæan Herbarium, named 
by Linnæus H. aduncum, is H. uncinatum, Hedw. 
Linnæus quotes the * Historia Muscorum of Dillenius, but, the de- 
scription and figure in this work are insufficient to determine precisely 
what Is meant. Dillenius however gives synonyms from the t i 
edition of Ray’s ‘ Synopsis,’ which he edited. In the preface to Ray — 
