SYSTEMATIC ARRANGEMENT OF ANOIOSPERMS 323 



Sub-class 1. Monocotyledone^. The Monocott- 



LBD02S^S. 



Leaves of young sporophore alternate ; leaves of mature sporo- 

 pliore usually parallel- veined ; fibro-vascular bundles of the stem 

 scattered, usually not arranged in rings. 



Okdbk 39. AFOCABF.a:. Watbb-plantains. 



Pistils separate, superior to all other parts of the flower. 



Family Alismaceae (Water -plantains) : Aquatic or paludose herbs 

 ■with mostly radical, often large leaves ; flowers small to large ; peri- 

 anth in two whorls of three leaves each (calyx and corolla). (Species 

 55.) 



Family Trinridese : Very small, pale, leafless plants growing in wet 

 places in tropical countries. (Sp. 16.) 



Family Naiadacese (Pondweeds) : Aquatic or paludose herbs with 

 mostly alternate stem-leaves ; flowers mostly small and inconspicu- 

 ous ; perianth none or of one to six leaves in one or two whorls. 

 (Sp. 130.) 



Oedbe 40. COEONAEIE.a;. Lilies. 



Pistils united (usually 3), forming a compound pistil, superior; 

 flower-leaves (usually 6, in two whorls) delicate and corolla-like. 



Family Stemonaoese : Pistil 1-celled ; stamens 4 ; perianth of two 

 similar whorls, each of two similar leaves. (Sp. 7.) 



Family tiliacese (The Lilies) : Pistil mostly 3-celled ; stamens 6 ; 

 perianth of two similar whorls, each of three similar leaves. (Sp. 

 2300.) 



Family Pontederiaceae (Pickerel-weeds) : Aquatic herbs with 3- or 

 1-celled pistil ; stamens 6 or 3 ; perianth of two similar whorls, each 

 of three similar or dissimilar leaves. (Sp. 84.) 



Family PhylidraoesB : Pistil 3-celled ; stamen 1 ; perianth of two 

 similar whorls, each of two dissimilar leaves. (Sp. 8.) 



Family Xyridaceae (Yellow-eyed Grasses) : Kush-like plants with a 

 1-celled or incompletely 3-celled pistil ; stamens 3 ; perianth of two 

 dissimilar whorls each of three similar leaves. (Sp. 47 ) 



Family Mayaoo9e : Slender, creeping, moss-like plants with 1-celled 

 pistil ; stamens 3 ; perianth of two dissimilar whorls, each of three 

 similar leaves. (Sp. 7.) 



Family Commelinacese (Spiderworts) : Succulent herbs with 3- or 2- 

 celled pistil ; stamens 6 ; perianth of two dissimilar whorls of three 

 similar leaves. (Sp. 700.) 



