ONAGRARIACEjE. 



463 



All the (Enotheras whose flower and fruit have the essential 

 characters of Onagra have been ranged in a section Eumnoihera} 

 Those called MerioUx^ {(E. serrulata) have a 

 little shorter receptacular tube and a stigma (Enothera spedom. 



dilated in the form of a disk. The petals are 

 not entire. In Megapterium^ (CE. macrocar- 

 pa, missourieii,sis), the receptacle is dilated 

 around the fruit in large and thick vertical 

 wings.* Taraxia^ ( (E. ovata, Nutta llii, etc. ) 

 has also sometimes ((E. gracilifiora) winged 

 fruit. The receptacular tube is long and 

 slender ; the stigma is capitate, the fruit ses- 

 sile and the stem very short. Cratericar- 

 pium^ [CE. suhulata) has the characters of 

 the preceding sections, with a 4-dentate 

 stigina, stamens with small anthers and fruit Pig. 430. Flower, 



dilated at the summit. Hartmannia'' [CE. 



rosea, tetraptera), like Cratericarpium, is from South America. The 

 fruit is often enlarged above, and the stigma is deeply divided into 

 four lobes. The seeds are contained in distinct cavities of the 

 pericarp. 



Boisduvalia ' and Godetia, by some distinguished as genera, have 

 been, by others, referred to this type as simple sections. In the 

 former, the receptacle rises above the ovary forming a funnel-shaped 

 cup the height of which is nearly that-of the ovary itself. In Qodetia,^ 

 this open portion is shorter and especially extends a less distance 

 downwards.'" In both the extremity of the style is divided into 



1 ToRK. et Ge. Fl. N.-Amer. i. (1840) 492.— 

 Wats. Proc. Amer. Acad. viii. (1873) 574, 679 

 (inol. : Onagra T. loc. eit. — Anogra Spacij, Nouv. 

 Ann. Mus. iv. 323, 324. — Kneiffia Spach, Nom. 

 Ann. Mm. iv. 364 ; Suit, ct Buffon, iv. 373.— 

 Fachylophis Spach, Noim. Ann. 356, t. 30 ; Suit. 

 363. — Xylopleurum Spach, Nouv. Ann. iv. 369 ; 



-Suit. iv. 369. — Lavauxia Spach, N. Ann. 357, t. 

 31; Suit. 367 (part, ex Wats. loc. cit. 585).— 

 Baumannid Spach, Suit. 351). 



2 Eafin. Amer. Monthl. Mag. [1819] bxEndl. 

 Gen. 1190. — Cah/lophis Spach, N.Ann. Mus. iv. 

 337. — Calylophus Spach, Suit, d, Buffon, iv. 366. 



' Spach, Nouv. Ann. Mus. iv. 350 ; Suit. & 

 Bufon, iv. 363. 

 * They recall in form and consistence a gr^at 



number of Comhretaeece with, winged fruit. 



5 NuTT. ex ToBK. et Gn. Fl. N. Amer. i. 506. 

 -^-Wats. loc. cit. 588, 605. — Primulopsis Tobk. 

 et Gb. loc. cit. 607. 



* Spach, Nouv. Ann. Mus. iv. 397. 



? Spach, Nouv. Ann. Mus. iv. 397 ; Suit, a 

 Buffon, iv. 370. 



' Spach, Nouv. Ann. Mus. iv. 327, t. 31 ; Suit. 

 a Buffon, iv. 383.— Endl. Gen. n. 6118.— Wats. 

 loc. cit. 678, 600. 



9 Spach, Nouv. Ann. Mus. iv. 326, t. 39 ; Suit. 

 a Buffon, iv. 386.— Wats. loc. cit. 677, 696; 

 Geol. Surv. Calif. Bot. i. 221. 



'" By this character, Godetia is intermediate 

 ■between Boisduvalia and Spharostigma, and ap- 

 pears, consequently, inseparable from either. 



