TRIBE I. ASTR^EACEA. 331 



14. PAVONIA CRASSA. (Dana.) 



P. maxima, foliis 6-9" latis, crassimis, planulatis velpaulum undulatis 

 aut curvatis, paucilobatis, erectis, decussatim aggregatis et coalitis ; 

 margine scepius acutis. Corattum robustum, margine non fragile, 

 superfaie non carinatum ; lamellis confertis ; oririmis vix oblongis, 

 interdum subseriatis. 



Very large, folia 6 to 9 inches broad, very stout, nearly flat or some- 

 what undulate or curved, few-lobed, erect and decussately aggre- 

 gated, margin usually acute. Corallum firm, margin not fragile, 

 surface not carinate ; lamellae crowded ; oririmes scarcely oblong, 

 sometimes subseriate. 



Plate 23, fig. 2, corallum, natural size ; 2 a, surface of same, mag- 

 nified ; also, plate 24, 1, 1 a, another variety. 



Feejee Islands, and Singapore. Exp. Exp. 



This species is remarkable for its thick and stout plates, the close 

 lamellse, and small size of the stars. There are several varieties 

 deserving mention. 



a. ascia (Plate 23, fig. 2). Folia six inches broad, the same in 

 height, scarcely lobed, a little curved, one inch thick at bottom, and 

 the same to within three inches of the top, subacute above, a few 

 obsolete carina3. Feejees. 



/3. obtusa (Plate 24, fig. 1). Folia of the same size as in the last, 

 but much curved, and with an obtuse undulate margin, one-fourth of 

 an inch thick ; at bottom, three-fourths of an inch. Feejees. 



y. bculata. Folia nine inches broad, eight high, nearly an inch 

 through at base, and half an inch, two inches from the upper margin ; 

 the plates intersect vertically, leaving between, large subquadrangular 

 spaces, often two to three inches wide. Singapore. 



III. Pavonice glomeratce. 



15. PAVONIA SIDEREA. (Ellis 4- Solander.} Dana. 



Subglobosa. Corallum oririmis 3-4'" remotis, inter stitiis vix ekvatis ; 

 lamellis denticulatis. 



