84 CAEYOPHYLLACE.E. abbnaria; 



§ 1 McEHEiNGiA Fenzl. in Endl. Gen. 9«8. Seedsat least 

 when young provided with a spongy appendage at the hilum. 



A. lateriflora L. Sp, 423. Minutely pubescent: stems erect, slender, 

 4-12 inches high, simple or branched : leaves oblong or oval obtuse, 5-6 

 lines long, punctate, hairy on the margin and midrib : peduncles lateral 

 and terminal, 2-flowered, one of the pedicels bibracteolate near the mid- 

 dle: sepals oblong-ovate obtuse, 1>^ lines long: petals oblong, obtuse, 

 twice longer than the sepals. In damp shady places, western Oregon to 

 the Atlantic Coast. 



A. maerophylla Hook. Fl. i, 102 t. 37. Stems apcending 3-8 inches 

 high, mostly simple, leafy ,puberulent above : leaves 3-4 pairs, narrowly lan- 

 ceolate, acute at each end, 1-2 incheslong, thin, bright green, the upper lar- 

 gest : flowers few on slender pedicels ; sepals ovate-oblong, acuminate, IJ^- 

 2}4 lines long, 1-nerved: petals obovate, longer or shorter than the sepals: 

 capsule ovoid, nearly equalling the calyx: seeds rather large, smooth. 

 Open forests, Brit. Columbia to California, east to the Rocky Mountains. 



§ 2 Ammadenia B. & H. Gen. i, 151. Flowers axillary. Sepals 

 united at base ; styles 3-5 : ovary more or less 3-5 celled, disk 

 conspicuous 10-lobed and glanduiiferous : capsule globose, some- 

 what baccate. Seeds not appendaged. 



A. peploides L. Sp. 423. Glabrous perennial : stems 6-8 inches high, 

 stout, angled : leaver, thick, ovate or obovate' 1-nerved, shortly pointed, 

 clasping at the broad base: sepals ovate- lanceolate, acuminate, 3J^ lines 

 long, about equalling the petals. Sandy seashore from the Columbia river 

 northwards and on the northern Atlantic Coast, (northern Europe and 

 Asia). 



A. Sitchensis Dietr. Syn. PI. ii, 1565. A pcpl-oides var. major. Hook. 

 1. c. 10$. Glabrous and succulent : 6-12 inches high from thick creeping 

 rootstocks: leaves oblong to short-spatulate, obtuse or acute, short-apicu- 

 late, fleshy, with narrow, scarious, crenulate margins : flowers axillary, on 

 short penduncles : lobes of the calyx lanceolate-ovate, acute, about a line 

 long : petals oblong, narrowed below to a short claw about half as long as 

 the lobes of the calyx, sometimes wanting. Salt marshes, coast of Oregon 

 to Alaska. 



§ 3 Merckia B. & H. Gen. i, 151. Styles 3-5. Ovary 3-5- 

 celled : capsule large, depressed-globose, somewhat inflated : 

 many-seeded, seeds not appendaged. 



A. physodes Fisch. in DO. Prod, i, 413. Cespitose perennial: stems 

 weak, decumbent, 3-6 inches long: leaves ovate, cuspidately pointed 4-6 

 lines long : flowers solitary at the summit of the stem di becoming lateral : 

 sepals lance-oblong, acute, 3 lines long equalling or slightly exceeding the 

 petals : capsule 4 lines in diameter. Brit. Columbia to northern Alaska, 

 perhaps northern Washington. 



§ 4 EuARENARiA Eobinson 1. c. 219. Styles normally 3, capsule 

 ovoid, dehiscent by 3 2-toothedor parted valves: seeds not 

 •appendaged. 



* Leaves ovate elliptic or linear, not acerose. 

 A. SBRPYLLiFOLiA L. Sp. 423. Diffuse, 3-10 inches high, retrorsely pu- 

 bescent: leaves ovate, acute, minutely ciliate: sepals lanceolate, acumi- 

 nate hairy 3-5 nerved, nearly twice the length of the petals: capsule 

 ovate, as long as the sepals. Fields and roadsides, western Oregon and 

 Washington, also in the Atlantic States. 



Var. tkndior Koch. Synop. 117. More delicate, leaves reduced : flowers 



