ONAGRARIACEJE. 



467 



Clarhia puUhella? 



characters of little importance. The four petals are unguiculate 

 instead of sessile, and most frequently three-lobed ; but this character 

 s not absolutely constant. The fruit 

 is capsular and loculicidal. In the 

 Glarkias proper, the receptacle is but 

 slightly prolonged in a funnel above 

 the ovary (fig. 432, 433), as in Lud- 

 wigia and some species of CEnothera, 

 whilst in Eucharidium,^ often con- 

 sidered a distinct genus, it is, like 

 that of most Onagras, prolonged in a 

 long and slender cylindrical tube. 

 The andrcecium is diplostemonous ; 

 but the four oppositipetalous stamens 

 are often small and sterile. The six 

 species^ of this genus are annual 

 herbs of north-'western America ; 

 they have alternate, elongate leaves, and axillary sessile and solitary 

 flowers. 



Epilobium and Zauschneria have often been placed in a small 

 separate group on account of this peculiarity, in itself of little im- 

 portance, that their ascending seeds have their chalazic region 

 charged with a long bunch of hairs (fig. 436, 437). In Zauschneria* 

 the receptacle is dilated, as in certain CEnotheras, in a funnel-shaped 

 tube surmounting the ovary and bearing at its lower part eight 

 glands, four of which are ascending and four descending.^ Z, cali- 

 fornica,^ the only species, is subshrubby, with alternate sessile elon- 

 gate leaves, and pretty axillary and sessile flowers. In JEpiloMum ^ 

 (fig. 434-437), on the contrary, the receptacle is arrested, as in 



Fig. 432. Flower Fig. 433. Trans, 

 without corolla. sect, of ovary. 



' Figures from the work of Spach {Suit, a 

 Buffon, Atlas, t. 35). 



2 FiscH. et Met. Ind. ii. (183.5) Sem. Sort. 

 Petr. 36.— Spach, Nouv. Ann. iv. 395.— Endl. 

 Gen. n. 6120.- B. H. Gen. 790, n. 9.— H. Bn. 

 Payer Fam. Nat. 374. 



3 LiNDL. Bot. Beg. t. 1100, 1575, 1962 {Eu- 

 ekaridivm), 1981. — Torb. et Gr. Fl. N.-Amer. 

 i. 515, 516 {Eueharidium).—Boi:Mag. t. 2918.— 

 Walp. Sep. il. 89. 



"Prbsl, Bel. S<Bnk. ii. 28, t. 52.— Spach, 

 Nam. Ann. Mm. iv. 405 ; Suit. & Buffon, iv. 400. 

 — Endl. Gen. n. 6122.— B. H. Qen. 788, m. 2. 



* The latter are oppositipetalous. 



" Pkesl, loe. 6.t. — 5'oEii. et Gr. Fl. N.-Amer. 

 i. 486.— Hook. Bot. Mag. t. 4493.— Walp. Rep. 

 ii. 93. — Z. mexieana Peesl. 



' Very variable in form, down, etc. 



8 Epilobium L. Gen. n. 471. — J- Gen. 319. — 

 Gjjrtn. Fruct. i. 157, t. 31.— Lamk. Diet. ii. 

 373 ; Suppl. ii. 568 ; III. t. 278.— DC. Prodr. iii. 

 40. — Spach, Nouv. Ann. Mus. iv. 403 ; Smt. A 

 Buffon, iv. 398.— Endl. Gen. n. 6121.— Payee, 

 Organog. 450, t. 94.— B. H. Gen. 471, n. 1.— H. 

 Bn. Payer Fam. Nat. 273.— Hook. Fl. Ind. ii. 

 682. — Ohamceneriwm Tabsch, Sort. Canal. 1. — 



30—2 



