48 HARPER 



i Afzelia pectinata® 



8-9 



yellow 



i Dasystoma pectinata® 



8-9 



yellow- 



i Chamaslirium luteuml| 



5 



white 



i Laciniaria squarrosalj. 



7 



purple 



i Kuhnistera pinnatal/- 



9-10 



white 



i Chrosperma muscsetoxicuml| 



5-6 



cream 



i Manfreda Virginica 



6-7 



cream 



i Galium pilosuml/- 







i Pentstemon hirsutusl/. 



4-6 



purple 



i Onosmodium Virginianum^ 



5-6 



cream 



i Amsonia ciliatalf. 



4-5 



pale blue 



i Amsonia tenuifolial/- 



4^5 



pale blue 



i Eupatorium compositifoliuml|. 



10 



white 



2 Coltricia parvula 







Summary. In the dry pine-barrens herbs are in overwhelming- 

 majority, not only in number of species but in individuals, and 

 nearly all of them are perennial. The'latter fact was considered 

 by Mr. Nash 1 in the case of the "high pine land" in central 

 peninsular Florida as a protection against destruction by fire, 

 but it might just as well be considered as a protection against 

 drought. 



Evergreens are scarce, and mostly confined to shrubs. There 

 are only four or five vines, mostly herbaceous. As already noted, 

 adaptations for reducing transpiration are prevalent. The fili- 

 form rigid leaves of the two most abundant plants in the whole 

 region, long-leaf pine and wire-grass, are typical examples. 2 

 The frequency of such specific names as angustifolia, gracilis, 

 graminifolia, lanceolata, tenuifolia, and others of similar import 

 is not without significance in this connection. 



Flowers seem to be most abundant early in June (see diagram) , 

 and at the end of July the number of plants in bloom is scarcely 

 half as large. There is a second but smaller maximum early in 

 September, to which the Compositas contribute largely. The 

 trees flower early here, as in most other habitats. The average 

 length of the flowering period for a single species is 49 days. 



About 24 species in this list have anemophilous flowers, and 

 of those fertilized by insects about 34 are white, 11 cream, 23 



1 Bull. Torrey Club 22: 143, 144. 1895. 



2 For references to anatomical studies of Baptisia perfoliate^, Cyperus 

 filiculmis, and Pinus palustris see the catalogue of species. 



