60 



HARPER 



The number of species in bloom at once is greatest early in 

 July, and nearly as great in August and September, but con- 

 siderably less at other times. The average flowering period 

 is 49 days, just as in the dry pine-barrens. Over 50 species 

 have anemophilous flowers, about 35 white, 1 35 yellow, 20 

 purple, 8 cream, 7 blue, and 4 red. Why white, yellow, and 

 purple flowers are so predominant here (and in other pine- 

 barren regions) 2 is a problem for the entomologist. The 



Jan. Feb. Mar. April May June July Aug. Sept. Oct. Nov. Dec. 



60 

 50 



40 

 30 



20 



10 



r , . , j-_|_;___>*^- ( .-__u___i___ l . 



4- — i — ; j — t""7~"i — ; - - - + -V - -i - - - -I — {■ 



• — 1 — 4 — j — 1_ j - _i — 1 — 1 — \~ j — + — j 



_, • 1 f>. ' L - 1 1 j- ' l-i 1 j. 



.. 1. ,'-/---• ■: 1 ' | '\- -' { 



; — 1 ... / — ; — i.__4 — r-.-j — T-A-!- — , L 



60 

 50 

 40 

 30 



20 

 10 



Fig. 5, 

 Phrenological diagram for 172 plants of moist pine-barrens, including 22 trees 

 and shrubs. 



abundance of these flowers, and the large size of many of them, 

 together with the omnipresent bright yellow leaves of Sarracenia 

 flava, make the moist pine-barrens very beautiful in summer. 



glabra, Myrica Carolinensis , and Eriocaulon decangulare, see catalogue of 

 species. Note the frequency in this habitat-group of such specific names 

 as angustijolia, filiformis, graminifolia, linearis, and nitida. 



1 One of the white-flowered species, Dichromena latifolia, belongs to a 

 family in which anemophily prevails (Cyperaeeas.) Although I have 

 never observed the visits of insects to this plant, there can be little doubt 

 that its very conspicuous snow-white bracts are for the purpose of at- 

 tracting them. 



2 See Bull. Torrey Club, 27: 424. 1900. 



