OF ARTS AND SCIENCES. 273 



Calyx 2-sepalous, wholly persistent. 



Herbaceous sepals concave, not scarious : gynoecium 3-merous. 

 Petals 5 to 10, rarely only 3, mostly ephemeral : stamens 5 (rarely 3) 

 to 25, seldom of same number as the petals : ovules and seeds sev- 

 eral or numerous : capsule either circumscissile or 3-valved from 

 summit. 5. Calandrinia. 



Petals 5, seldom ephemeral : stamens 5 (or 3 in two Montioid species) : 



ovules and seeds few. 6. Claytonia. 



Petals 5, unequal and united below into a short cleft tube : stamens 8: 



seeds 2 or 3. 7. Montia. 



Scarious or partly scarious rounded sepals plane : gynoecium 2-merous : 



capsule 2-valved. 8. Calyptkidium. 



I make no account of the character of seeds strophiolate or estro- 

 phiolate, introduced, I believe, by Fenzl and kept up by Bentham and 

 Hooker, to distinguish Talinum from the genera that follow it. For, 

 indeed, the strophiole is obscure or wholly wanting to the seeds of the 

 typical species of Talinum (as Rohrbach in Fl. Brasil. notices) ; and, 



specific name. To this may doubtfully be referred E. elegans, Greene, 1. c. 

 (excl. var. ramosa), coll. on Guadalupe Island by Palmer and Greene. 



•*- •*- Seeds with a thick very coarsely and deeply pitted coat : divisions of the 



leaves filiform-linear. 



E. GLYPTOSPEKMA, Greene, 1. c. A low scapose species, with finely dissected 

 leaves, from the Mohave Desert, to which probably belongs E. Parishii, Greene, 

 1. c. 183, from farther south. 



•I- -1- -(- Seed-coat strongly muricate-squamose in about 12 longitudinal rows : 

 stems low and slender, somewhat hispidulous-pubescent below : leaves with 

 comparatively few and simple narrow-linear divisions. 

 E. TENuiFOLiA, Hoolc. Bot. Mag. t. 4812, not Benth. Name which may be re- 

 tained, since the homonym of Bentham is a strict synonym of his E. ccespitosa. 

 Moreover, it is what Greene took up for E. tenuifolia, and he first described the 

 peculiar seeds. It is E. Douglasii, var. tenuifolia, Torr. Pacif. R. Rep. iv. 14, and 

 the E. Californica, var. casspilosa, Brewer & Watson, Bot. Calif, i. 23. It occurs 

 in the valley of the Sacramento and the foothills of the Sierra Nevada, and 

 probably was first collected by Fremont. 



* * Petals quarter-inch long or mostly less, obovate, promptly deciduous or 

 caducous : seeds with reticulate surface. 



E. MiNUTiFLORA, Watson, Proc. Am. Acad. xi. 122. A leafy-stemmed and 

 small-leaved species, with petals only a line or two long, of the interior arid 

 region. 



E. RHOMBiPETALA, Greene, Bull. Calif. Acad. i. 71. A depressed-spreading 

 low species, commonly scabro-hispidiilous below, with stout subscapose pedun- 

 cles, and fugacious rhombic-obovate petals, of 3 or 4 lines in length ; found only 

 in the valley of the San Joaquin and lower part of the Sacramento, by Mrs. 

 Curran. 



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