3 8o 



THE AM ERICA X XA Ti'RALlST. [Vol. XXXVII. 



examining in search of nectar. The fruits of this genus are 

 green, white, yellow and red. The small, open, campanulate 

 flowers of Physalis (ground-cherry) are nectariferous. The 

 seventeen northern species are greenish-yellow, bright yellow, or 

 sulphur-yellow, sometimes throughout, but often with a brown 

 or purple center, or with purplish spots. The yellow anthers 

 are frequently tinged with purple, and the calyx in some species 

 is purple-veined. The berry is also yellow or purple. In Leu- 

 cophysalis the flower is white sometimes tinged with purple 

 with a yellow center. The fruiting calyx of the strawberry 

 tomato, P. alkekengi from Southern Europe, contains an intense 

 scarlet pigment. 



The flowers of Nicotiana and Datura are funnelform, or 

 tubular, and adapted to Lepidoptera. Xicoticuia rnstica and X. 

 longiflora are nocturnal species ; in the former the corolla is 

 yellowish-green, and in the latter it has a white border and a 

 green tube four inches in length. The common tobacco, or N. 

 tabacnui, which is a diurnal species, has red-purple flowers. In 

 Datura the large nocturnal flowers are four inches long by two 

 broad. D. stramonium has green stems and white flowers, 

 while D. iatnla has violet-purple flowers and purple stems. 

 Brunfelsia grandiflora has greenish flowers two inches in length ; 

 while B. latiflora has lavender flowers with a white eye, which 

 fade to white. Both of these species come from South America. 

 Two cultivated exotic genera, which also have funnelformed 

 corollas, are Salpiglossis and Petunia. The large handsome 

 purple or rose-colored flowers of Salpiglossis are remarkable for 

 being netted-veined and laced with golden yellow. The numerous 

 hybrids of Petunia under cultivation arc chiefly derived from two 

 South American species, one of which is white and the other 

 red-purple. Thev exhibit a wonderful variety of bicolored, tri- 

 colored, and variegated flowers often veined or mottled in 

 endless ways. A unique form is striped or margined with green. 

 The coloration of the Solanace^e, which is an extensive tropical 

 family, is of more than usual interest because of the many gieen 

 flowers of large size which it contains. These green flowers, as 



