

Vol. 2 



138 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



(or 2 or 0) ; stamens 3-40; pistil 2-6-carpellary ; seeds many; 

 endosperm 0. Reseda. (Pf. 3 2 : 237.) 



Family 131. Capparidaceae. Capers. Herbs, shrubs, and 

 trees with alternate or opposite leaves, and regular or irreg- 

 ular flowers; sepals 4; petals 4 (or 0) ; stamens 4 (or many) ; 

 pistil 2-6-carpellary, endosperm 0. Cleome, Capparis. (Pf. 

 3 2 :209.) 



Family 132. Brassicaceae. Mustards. Herbs, rarely shrubs, 

 with alternate (or opposite) leaves, and regular flowers ; sepals 

 4 ; petals 4 ; stamens 6 or 4 ; pistil 2-carpellary ; endosperm 0. 

 Sinapis, Brassica, Raphanus, Bursa, Alyssum. (Pf. 3 2 : 145.) 



Order Caryophyllales. Pistil usually of 3 or more united 

 carpels, mostly 1-celled, with a free-central placenta, and many 

 ovules (sometimes reduced to a one-celled, one-ovuled ovary) ; 

 stamens as many or twice as many as the petals ; flowers reg- 

 ular; seeds mostly endospermous, usually with a curved em- 

 bryo. ( Species about 4330. ) 



The general arrangement of the families of the order 

 Caryophyllales may be understood by placing the Caryophyl- 

 laceae centrally at the base ; from this, one line runs off to the 

 diplochlamydeous, hermaphrodite Frankeniaceae and Tamari- 

 caceae to the achlamydeous, diclinous Salicaceae, while on the 

 other hand another line passes from the diplochlamydeous, 

 many-ovuled Caryophyllaceae to the apetalous, 1-ovuled 

 Amaranthaceae, Chenopodiaceae and Polygonaceae. 



Family 133. Caryophyllaceae. Pinks. Herbs (and shrubs) 



with opposite leaves; petals 3-5, stalked or not; ovules many 

 on a central placenta; seeds endospermous. Silene, Lychnis, 

 Dianthus, Alsine, Paronychia, Illecebrum. (Pf. 3 lb :61.) 



Family 134. Elatinaceae. Small marsh herbs or under- 

 shrubs, with small, opposite or whorled leaves; inflorescence 

 axillary ; petals imbricated ; stamens 4-10 ; endosperm 0. Ela- 

 tine. (Pf. 3 6 :277.) 



Family 135. Portulacaceae. Purslanes. Herbs, or some- 

 what woody plants, usually somewhat succulent, with alternate 

 or opposite leaves; sepals usually 2; petals 4-5; seeds many, 

 endospermous. Claytonia, Portulaca. (Pf. 3 lb : 51.) 



