166 TAMARISCINRiE. (TAMARISK FAMILY.) 



equal, qbtuse, keeled beneath apex ; petals yellow — SpriDg and sum- 

 mer — Moist places ; common throughout. 



Order XVIII. TAMARISCIKE^. (Tamarisk Family). 



Shrubs or trees, with regular , usually hermaphrodite 

 flowers, 2i 4:-^-lohed or parted calyx imbricated in the bud, 

 4:-^-petals imbricated in the bud inserted under the hypogy- 

 710US dish, a free 1-celled ovary developing into a capsule 

 with as many valves as the styles — Staineus 4-oo inserted on 

 the disk, free or variously united at base. Styles 3-5. Seeds 

 few or many, anatropous, with or without albumen, hairy all 

 over or with a tuft of hairs at tip ; embryo straight ; radicle 

 superior. 



TRIBE I. TAMARISCE^. Seeds with a tuft of liair at tip, not albuminous. 

 Flowers in spike-like racemes. 



1. TAMARIX, Stamens free, or united only at base. Trees with minute, scale-like leaves 



TRIBE II. REAUMURIE-^. Seeds hairy all over, albuminous. Flowers 

 solitary, axillary or terminal. 



2. REAUMURIA. Stamens 5-adelphous, the groups opposite the petals. Low shrubs, 



1. TAMARIX, L. Tamarisk. Tarfa. AtM. 



Calyx 4-5- (rarely 6-) parted. Petals 4-5 (rarely 6). Stamens 4- 

 10, inserted on a glandular, crenate disk ; filaments free, or united 

 only at base. Styles 3-4, (rarely 2-5), sometimes very short. Capsule 

 1-celled, valves 3-4, bearing the septiform placentee on their lower half. 

 Seeds produced into a hairy beak — Shrubs or trees, with deciduous 

 branches, minute, scale-like leaves, and hermaphrodite or rarely di- 

 cecious flowers. 



* Macemes lateral^ a'p'pearing lefore or icith the leaves in Spring. 

 t Stamens usually more numerous than 5-merous sepals and 2>etul8 



1. T. Syriaca, Boiss. 5 3 to 6, glabrous, green. Leaves sessile, 

 lanceolate, scarious at tip. Eacemes short-peduncled, loose, .004 in 

 diameter. Petals ovate, hooded, erect ; stamens 6-8, inserted between 

 the twin glands of the disk ; styles 3-4, half as long as ovary — Spring' 

 — Coast near Sidon. 



1 1 Stamens as many as sepals. 

 X Flowering racemes .006 or more in diameter. Flowers 4t-merous. 



2. T. tetragyna, Ehr. 5 3 to 5, glaucescent, glabrous. Leaves 

 lanceolate from a broad base, with smooth margins. Racemes jo«(^w7i- 

 cled, .08 to .1 long, rather loose ; bracts scarious, a little shorter than 

 flowers ; pedicels about as long as calyx ; petals obovate-elliptical, 

 spreading ; stamens inserted on lobes of disk ; styles coherent at base, 

 spathulate, somewhat less than half as long as ovary — Spring — Coast 

 near Carmel ; Desert of et-Tih ; and southward. 



3. T. tetraiicira, Pall. 5 1 to 4, glabrous, green with Uach- 

 lyarl'. Leaves short-adnate at base, lanceolate, with translucent carti- 

 laginous margins, acute. Racemes subsessile, rather loose ; bracts long_ 



