EL^TINACEJE. 33 



6. LEWISIA, Pursh. 



1. L. rediviva, Pursh. Scapes with a whorl of scarious bracts. 



2. L. brachycalyx, Engelm. Scapes 2-bracted at base: sepals 4. 



ELATINACE.E. 



Small prostrate aquatics with entire leaves: parts of the flower each 2 to 4 (except in 



sp. No. 3). Sepals obtuse: membranaceous 1 



Erect, glandular-pubescent: parts of the flower in 5's... ..*. 2 



ELATINE, Linnaeus. 



1. E. Americana, Arnott. Seeds pitted in 9 to 10 lines, | line long. 



2. E. brachysperma, Gray. Seeds pitted in 6 or 7 lines, shorter. 



3. E. Calif ornica. Flowers not sessile: seeds much curved: stamen* 6 to & 



BERGIA, Linnaens. 

 1. B. Texana, Seubert Leaves serrulate: flowers 



HYPERICACEJ1. 



HlTPERIC'DTil, 

 Stamens very numerous: styles 3, long ................... ....,..,.. . .,- . ~ . . . 1, 2 



Stamens 15 to 20: styles 3, short: petals included .................................. 3 



1. H. formosum, HBK. var. Scouleri, Coulter. Flowem 6 lines broad. Wet ground. 



2. H. concinnum, Benth. Leaves acute: flowers an inch broad. Dry ground. 



3. H. anagalloides, 0. & S. Leaves 2-6 lines long: flowers 3-4 lines broad. Wet 

 ground. 



MALVACEJE. 



Column of stamens bearing anthers at the 'jop-, carpels in a ring around the axis. 

 Calyx-bracts 2 or 3, united below: an evergfljen sver-blooming shrub ................. 1 



Calyx-bracts 3, distinct: flowers axillary, pinkish: leaves 5-7-lobed. .................. 2 



Calyx-bracts none: flowers racemose or spicate. ................................... 8 



Calyx-bracts 1 to 3 or none: densely tomentos* (except in sp. 6 & 7) ............ _____ 4 



Calyx-bracts 1 or 2, slender: leaves 1-sided: flowers yellowish ........................ 5 



Column of stamens naked at top, 5-toothed: carpels forming a many-seeded capsule. 

 Calyx-bracts many ............................................................. 6 



