282 
A n account of the genus Struvea . 
EXPLANATION OF FIGURES IN PLATE XVI. 
Illustrating Messrs. Murray and Boodle’s paper on the genus Struvea. 
Fig. 1. a , Struvea plumosa (nat. size), b, c, d, Stages in development of S. 
plumosa (nat. size), e, Part of nearly mature frond ( x 6). f Apex of filament 
with tenaculum (x 60). g, Melobesia coating of part of stalk ( x 5). /?, Striations 
of membrane of midrib (highly magnified). 
Fig. 2. a , S. macrophylla (nat. size), b, Part of frond of S. macrophylla (x 2). 
Fig. 3. a , S. ramosa , unbranched specimen (nat. size), b. Branched specimen 
showing rugae (nat. size), c, Part of frond of S. ramosa ( x 6). d, Tip of filament 
with tenaculum ; the rootlets are seen partly in surface view ( x 130). e } Pinnule 
bearing two tenacula ( x 30). f, Pinnule forming two branches ( x 30). g, Base 
of frond showing position of clamps ( x 30). One of the clamps more highly 
magnified (x 130). 
Fig. 4. a, S. pulcherrima restored and reduced to one fourth, b, Part of frond 
(x 6). 
Fig. 5. a, S. tenuis (nat. size), b, The same magnified ( x 10). c, Upper part 
of frond ( x 40). d, First stage in formation of the frond ( x 35). 
Fig. 6. a, S. delicatula (nat. size), b, Part of frond (x 6). c, Early stage in 
formation of frond ( x 6). d , Case of prolification ( x 30). 
Fig. 7. a, S. delicatula var. Caracasana (nat. size), b, Part of frond ( x 6). 
Fig. 8. a, S. delicatula erect form (nat. size), b , Part of frond ( x 30). c, Roots 
of same ( x 30). 
