OCTANDR] \, MONOG1 M \. 



I (ENOTHEH \ Gen. pi < ; " agrm.) 



CulLv tubuloos; l-deft. segments deflected; 

 deciduous. Petal* l. inserted upon the ca- 

 li\. Stigma 1 -cleft. CapsuL I -celled. 4-- 

 Milvod. inferior. Seeds naked, affixed to a 

 centra] 4-sided receptacle. — AV#. 



i. (_K. stem villous) scabrous, leaves oyate-lanceo- u«Hk 

 late, flat : Bowers terminal, subspicate-sesailej 

 with the stamens shorter than the corolla. — 



mud. 



(Knuthera mollissima, Walt. ? 

 Icon. Fl. Uan. 446, 



Evening Tree-primrose. 



This elegant ornament of our field-hedges, is cultivated 

 sometimes in our gardens, where its flowers acquire a much 

 filler yellow colour, and becomes larger. They are generally 

 of a pale yellow, and open in the evening, just as the sun 

 I i the horizon. This opening is effected by a very Mid- 



den retraction of the calix leaves, which are forcibly thrown 



it the peduncles, and an immediate expansion of the pe- 



The flowers continue thus expanded till the sun is about 



an hour on two high, when the) are partially closed, and again 



. ning. The flowers are ver\ numerous, and 1 am 



Ml certain that the same one opens a second time ; perhaps 



not. 1 hare cultivated the plant in my garden, and in that 



the same flower was but once expanded, and thenfaded. 

 Mr. Ptt] noticed an appearance of phosphoric light ema- 



nating from the flowers of this evening primrose, during very 

 dark nights. The plant is about three or four feet high. On 

 the boiden of cultivated fields, and in natural hedges, very 

 common. Also, occasionally, in thickets, along watercourses. 

 In the latter situation the leawet often become diseased, when 



assume ■ whitish appearance. Biennial. August. 



:. (K. smoothish, leaves lanceolate, snhdentate, frffeaav 



acute; capsules pedicellate, oblong-clavatej an- 



gI ( . ( l._/r,// ( /. 



Icon. Hot. Mag. 532. 



17 



