ALSINE^. (CHICKWEED FAMILY.) 



147 



1. O. segetum, Desf. © Corn Cockle .4 to .6, appressed- 

 canescent. Leaves linear-lanceolate. Calyx-loljes linear-lnceolate, much 

 longer than tube, and purple, obovate, somewhat retuse petals — April 

 to July — Fields ; common. 



2. O. gracilis, Boiss. slender Cockle .3 to .5, appressed- 

 canescent. Leaves linear. Calyx-lobes linear, shoo'ter than tube and 

 pink, obovate or obeordate petals — Fields ; Marash and northward. 



Okder XIV. AliSIXEiE, DC. (Chickwked Family). 



Herbs or shruhhy plants^ with oj)posite, stipulate or ex- 

 stipulate leasees, regular flowers composed of 4-5 distinct.^ 

 persistent sepals^ 4-5 (rarely 0^ petals, generally iiribri- 

 cated in the hud, stamens inserted at the base of the sessile, 

 l-celled ovary, or into a hypogynous dish ; seeds with peri- 

 pheral embryo — Petals short clawed or sessile. Stamens 

 3-10 ; anthers 2-celled. Style 2-5, rarely 7. Capsule dehis- 

 cent by teeth or valves ; seeds many or few. 



Fig. 71. 



(o) Branch ofanArenaria 

 with four pairs of opposite leaves, 

 a 2-flowered cyme, two small 

 bracts at the base of each pedi- 

 cel, and one flower, and one 

 capsule with three styles. 

 (6) A flower magnified 3 dia- 

 meters, showing the 5 petals, 10 

 stamens, and 3-valved capsule, 

 surmounted by 3-Btyles. (c) A 

 seed divided lengthwise to 

 show the peripheral embryo. 



TRIBE f. SABUIilNEJE. Stipules 0. Talves of capsule undivided, as many ae 

 styles or fewer. 



* Styles as many as sepals, alternating with them, 



1. SAGINA. Stamens (in ours) 4. Petals minute or 0. Dwarf weeds, flowers minute, 



green. 



* * Styles 2-3 (rarely 4-7) opposite the external sepals. Valves of capsule 2-3, alternate vrith 



sepals, 



2. BUFFONIA. Petals 4. Styles 2. Ovary 2-10-OTuled. 



