56 Charles E. Bcsscy 



Family 30. Cyperaceae. Grass-like herbs with 3-ranked leaves ; 

 perianth segments bristly or none; pistil i -celled; ovules anatro- 

 pous, erect. Cypcrus, Scirpiis, Fimbristylis, Rhynchospora, Ca- 

 rex. (P£. II, 2', 98.) " " • 



Family 31. Gramineae. Mostly erect herbs with hollow, 

 jointed stems, and 2-ranked leaves ; perianth segments of 2 to 6 

 thin scales or none; pistil i-celled; ovules anatropous, ascending. 

 Bamhusa, Bromus, Triticum, Boiiteloua, Avena, Agrostis, Pha- 

 laris, Oryca, Panicum, Andropogon, Zca. (Pf. II, 2, i.) 



Order Hydrales. Compound tricarpellary pistil, inferior to 

 all other parts of the flower; flower-leaves in each whorl alike in 

 shape (flower regular) ; seeds without endosperm. 



Family 32. Hydrocharitaceae. Small aquatic herbs mostly in- 

 habiting the fresh waters of temperate climates. J^allisncria, Hy- 

 drocharis, Elodea. (Pf. II, i, 238.) 



Order Iridales. Compound tricarpellary pistil, inferior; flow- 

 er-leaves in each whorl mostly alike in shape (flower regular) ; 

 seeds with endosperm. 



Family 33. Amaryllidaceae, Leaves narrow, or the blade 

 broad, with longitudinal veins; pistil 3-celled; ovules many; sta- 

 mens 6 or 3. Amaryllis^ Crinnni, Narcissus. Agave, Hypo.vis. 



(Pf. II, 5, 97.) 



Family 34. Haemodoraceae. Leaves sword-shaped ; pistil 3- 

 celled ; ovules i to many; stamens 6. Haeniodornm. (Pf, II, 5. 

 92.) 



Family 35. Iridaceae. Leaves sword-shaped; pistil 3-celled; 

 ovules many; stamens 3. Croeus^ Iris, Tigridia, SisyrincJiiuin, 

 Ixia, Tritonia, Gladiolus, Frecsia. (Pf. II, 5, 137.) 



Family 36. Velloziaceae. Woody-stemmed leafy plants, with 

 a 3-celled pistil containing many ovules, stamens 6 or more. Vel- 

 loda. (Pf. II, 5, 125.) 



Family 37. Taccaceae. Stemless herbs, with broad pinnately 

 parallel veined leaves; pistil i-celled; ovules many; stamens 6. 

 Tacca. (Pf. II, 5, 127.) 



Family 38. Dioscoreaceae. Mostly twining herbs with broad, 

 petioled, longitudinally-veined leaves ; pistil 3-celled ; ovules 2 in 

 each cell; stamens 6. Dioscorca, Tcstudinaria. (Pf. 11, 5, 130.) 



330 



