CI. TRAPES. 439 



or hairy at tlie chalaza {Epilohium). Embryo exalbuminous, straight; cotyledons 

 foliaceous or a little fleshy, often auricled at the base; radicle conical, cylindric, 

 near the hilum, superior or inferior, rarely centripetal. 



PEINCIPAL GENERA. 



* Epilobium. * Jussieua. Ludwigia, * Clarkia. * CEnothera. 



* Fuchsia. * Lopezia. * Godetia. * Eucliaridium. Isnardia. 



* Zauschneria. Circsea. * Gaura. [Trapa.'] 



ANOMALOUS GENUS. 

 Montinia. 



Onagrarieee are connected with Haloragea, Trapeca and Coinhretaceee by the valvate calyx, the 

 iso- or diplo-stemonoua corolla and the inferior ovary ; but Hdloragece differ in their albuminous 

 embryo, Trapets in the imbricate Kstivation of their corolla, and Comhretaccm in their 1-celled ovary. 

 Lythrariets have some affinity with Onagrariea ; in both families the calyx is valvate, the corolla iso- 

 or diplo-stemonous, the ovarian cells many- ovuled, the style simple, the fruit a capsule, and the embryo 

 straight and exalbuminous ; but Lythrariecs have a free ovary and imbricate petals. Onagrarieee are 

 widely diffused ; but chiefly in the extra-tropical temperate regions of the northern hemisphere, and 

 especially of the New World. Fuclma extends from Mexico to the Straits of Magellan and New 

 Zealand. Many Epilobia are found in the southern hemisphere [they are characteristic of the herba- 

 ceous vegetation- of New Zealand]. 



Onagrariea contain mucous and sometimes slightly astringent principles, and for this reason Circcea 

 ;«<e<jaM« and the narrow-leaved Epilobia are used in some countries, especially externally; in Sweden 

 they eat the young shoots of the latter, Several CEnotheras, and especially (E. biennis, have a sweet 

 and edible root. Fuchsia excorticata has poisonous berries [P]. [Those of other species are sweet and 

 edible. Montinia, a Cape genus, is said to be acrid.-< Ed. J 



CI. TEAPEA:;' Endlkher. 



^BA 



Lacustrine floating hbebs. Leaves, some submerged, others emerged : the 

 submerged opposite, pinnatisect (like rootlets), the upper alternate; the emerged in 

 a rosette, petioled, rhomboid ; 'petiole, vesicular during flowering, exstipulate. 

 Flowee8 axillary, solitary, shortly peduncled. Calyx 4-partite, valvate in bud, 

 with spiny lobes. Petals 4, inserted on an annular fleshy sinuous disk, crowning 

 the top of the ovary, alternate with the calyx-segments, imbricate in bud, edges 

 folded. Stamens 4, inserted with the petals, the alternate shorter; filaments 

 filiform-subulate ; anthers introrse, 2-celled, dorsiflxed, dehiscence longitudinal. 

 OvAKY semi- inferior, of two 1-ovuled cells ; style cylindric, simple ; stigma flattened, 

 obtuse; ovwUs pendulous from the top of the septum, anatropous, raphe dorsal. 

 Feuit coriaceous [or woody], indehiscent, crowned by the spinescent calyx-limb, 

 which resembles 2-4 horns, capped by the hardened disk, 1-celled and 1-seeded from 

 arrest. Seed inverted; testa membranous, adherent, the upper part spongy. 

 Embryo exalbuminous, straight ; cotyledons very unequal, one very large, thick, and 

 farinaceous, the other minute, squamiform, inserted a little lower ; radicle slightly 



' See order Trapem, p. 439, — Ed. ^ See also under Onagrarieee, p. 439. — Ed. 



