XXVI. CAETOPHYLLB^. 



Stellaria. 



Pistil 



and androecium 



(mag,). 



Stellaria. 



Compressed peed, entire, and witli Tertical 



and transTerse sections, 



with inciimbeut cotyledons (mag.). 



Stellaria. / 

 Debiscent fruit. 



.Bnfonia macrosperma. 

 Seed entii-e, and with vertical and transverse sections showing the 

 ' accumbent cotyledons (mag.). 



Colohanthus, 

 Apetalous flower, stamens 

 alternate with 

 the sepals (mag.). 



Spergularia marginata. 

 "Winged seed, entire, and with vertical and 

 transverse sections, 

 with incumbent cotyledons (mag.). 



Hotosteum. 

 )epressea seed, ventral 

 keeled face (mag.). 



Holosteum. 

 Sagina. 



Holostevm wnbellatum. 



Seed, cut vertically and transversely, with 



incumbent cotyledons (mag.). 



Cerastium arveiise. 

 Seed, entire, and with vertical and transverse 

 sections, with incumbent cotyledons (mag.). 



PRINCIPAL GENEEA. 



*Cerastium. Stellaria. *Arenaria. Buffonia. 



Colobmthus, Queria. *Spei'gula. Spergularia. 



Teibe III. POLYGARPEJE, D.C. 



Sepals free, or united at the base by the disk. Petals as in AlsinecB, usually 

 small, liypogynous, inserted with the stamens on a slightly developed torus, or 

 shortly perigynous. Style simple at the base, 3-2-fid above. Stamens 5 or fewer. 

 Leaves usually furnished with scarious stipules. 



PEINCIPAL GENERA. 



Drj'maria. 

 Loeflingia. 



Polycarpon, 

 Polycarpoea. 



Ortegia. 

 Stipulicida. 



Caryophylkce, with FaronycMnce, Fm'iulacecc^ Amarantacea, BaseUea;, Chenopodieee, Phytolaceea, 

 NydaginecE, and even Polygoneai, form a group of plants of which the common character is a curved 

 embryo surrounding a floury albumen (see these families). Those Carynphylleee which have petals, definite 

 stamens, a one-celled and many-ovuled ovary, and opposite leaves, are easily distinguished from all these 

 families ; but the apetalous and few-ovuled genera approach several of them. Notwithstanding their 

 parietal placentation, we may unite to this group Mesembryanthemea, which have a curved emhryo 

 surrounding a floury albumen, and Cactea, which have a curved but usually exalbuminous embryo. 



