88 CAEYOPHYLLACEAE 



1. V. vulgaria Host. Cow HERB. A smooth annual, l-3 high with 

 ovate- lanceolate leaves and rather small reddish flowers in loose cymes. 

 Occurs occasionally in waste places, especially along railroads at Sheffield. 

 June. 



6. ALSINE L. 



Diffuse annuals. Stamens 10 or less. Styles usually three. Pod 1- 

 celled, several-many-ovuled, and usually 6-valved. 



1. A. media L. CHICKWEED. Stems spreading, hairy : leaves 

 ovate, the lower long-petioled : flowers axillary or terminal, slender- 

 pedicelled : petals shorter than sepals. Locally well adventized in 

 gardens in Kansas City and Independence. May-October. 



7. CERASTIUM L. CHICKWEED. 



Flowers cymose. Stamens 10 or less. Pod 1-celled, many-ovuled, 10- 

 valved. 



Petals not longer than sepals. 1. C. vulgaium. 

 Petals longer than sepals. 



Pedicels 3-7 times as long as calyx. 2. C. longipedunculatum. 



Pedicels 1-2 times as long as calyx. 3. C. Irachypodum. 



1. C. vulgatum L. Annual, 4 / -12 / long, spreading, hairy : leaves ob- 

 long : pedicels longer than calyx. Common in woods and fields. April- 

 June. 



2. C. longipedunculatum Muhl. Annual. 6 / -30 / high, erect or as- 

 cending, more or less clammy-pubescent : leaves oblong-lanceolate, V-W 

 long : cyme open, many-flowered. Abundant in moist woods. April- 

 June. 



3. C. brachypodum Engelm. Like the last but usually smaller : 

 leaves 3 // -12 // long: cymes more compact. Common in barrens and 

 rocky prairies throughout the southern part. April-June. 



8. ARENARIA L. 



Flowers terminal, cymose. Stamens 10. Styles 3. Ovary 1-celled, 

 many-ovuled, opening by 3 valves. Seeds without an appendage at the 

 hilum. 



1. A. patula Michx. SAND WORT. Annual, diffusely branching: 

 leaves linear-filiform : petals white: sepals 3-5-nerved. In barrens near 

 Independence and at Greenwood. Locally abundant. May-June. 



9. MOEHRINGIA L. 



Cymes few-flowered. Stamens 10. Styles 3. Ovary few-ovuled. 

 Seeds with an appendage at the hilum. 



1. M. lateriflora (L.) Fenzl. SANDWORT. Erect, puberulent, 1 or 

 less high : leaves oval or oblong, obtuse : cymes 1-4-flowered, soon ap- 

 pearing lateral. In wet rocky woods between Lee's Summit and Little 

 Blue Tank, fide Rev. Cameron Mann. May. 



