ARTIFICIAL ANALYSIS OF THE NATURAL ORDERS. XXXIX 



Leaves parallel-veined. 



Capsule 1-celled. Stamens, or the fertile ones, three. PONTEDERIACE.aj, 623 

 Capsule or berry 3- (rarely 4 or G-) celled. 

 Anthers introrse (except Lilium). Style single. 



Stigmas 3, nearly sessile. ( ^lACE*), * 

 Styles 3. l 



Anthers extrorsa (except Tofieldia). Styles 3 or 1. 1 MELANTHACE.E, 5 

 Calyx and corolla unlike. 



Ovaries few or numerous, forming achenia in fruit. ALISMACEjE, 472 



Ovary solitary. 



Palms. Calyx tubular. Leaves fan-shaped. PALM^E, 4G1 



Epiphytes. Plants scurfy. BROMELIACE^E, 497 



Herbs. Stamens G. Leaves 3 in a whorl. Flower single. TRILLIACE^E, 502 



Leaves alternate, sheathing. COMMELYNACEjE, 524 



Stamens 3. Flowers perfect, solitary. Stem leafy. MAYACACE^, 52G 



Flowers perfect, capitate. Scape leafless. 



XYRIDACE^E, 52G 

 Stamens 3 or 4. Flowers monoecious, capitate. Scape leafless. 



ERIOCAULONACE^, 529 



# * Flowers glumaceous, i. e, iri/h scale-like bracts, in place of proper floral 



envelopes. 



Bracts single. Sheaths closed. Fruit an achenium. CYPERACE.E, 531 



Bracts by pairs. Sheaths open. Fruit a caryopsis. GRAMINE^E, 573 



SERIES II. CRYPTOGAMOUS OR FLOWERLESS 



PLANTS. 



Plants destitute of proper flowers, and producing, in place of 

 seeds, minute bodies (spores) which do not contain an embryo. 



CLASS III. ACROGENS. 



Plants with a distinct stem containing woody and vascular tissue, 

 growing from the apex only. 



Spores of only one kind. 

 Sporangia borne beneath peltate scales in a terminal spike. Stem leafless. 



EQUISETACE^E, C21 



Sporangia borne on the back or margin of fronds circinate in vernation. FILICES, G22 

 Sporangia borne in spikes or panicles. Fronds not circinate. OPHIOGLOSSACEjE, t>36 

 Sporangia solitary in the axils of small leaves. LYCOPODIACE^, C38 



Spores of two kinds, large or small. 

 Sporangia solitary in the axils of small 4-ranked leaves. Stems branching. 



SELAGINELLACEJ3, 639 

 Sporangia solitary in the dilated base of long clustered leaves. Stem corm-like. 



ISOETACE^;, G40 



Sporangia enclosed in a peduncled sporocarp. Leaves 4-foliate. MARSILIACE.iE, G40 

 Sporangia enclosed in a sessile sporocarp beneath branching floating stems. 



SALVINIACE.E, 641 



