ARTIFICIAL ANALYSIS OF THE NATURAL ORDERS. XXXIX 



Leaves parallel-veined. 



Capsule 1-celled. Stamens, or the fertile ones, three. PONTEDERIACE^, 523 



Capsule or berry 3- (rarely 4 or 6-) celled. 



Anthers iutrorse (except LUium). Style single. \ 



a.J % , -, } LILIACE^, 507 



Stigmas 3, nearly sessile. ) 



Styles 3. 1 



. ,. , , . rr « ,^- ^ c. I Q 1 } MELANTHACE^, 513 



Anthers extrorse (except Toneldia). Styles 3 or 1. ) 



Calyx and corolla unlike. 



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



Ovary solitary. 



Palms. Calyx tubular. Leaves fan-shaped. PALMJ5, 461 



Epiphytes. Plants scurfy. BROMELIACE^, 497 



Herbs. Stamens 6. Leaves 3 in a vi^horl. Ploveer single. TRILLIACEjE, 502 



Leaves alternate, sheathing. COMMELYNACE.E, 524 



Stamens 3. Flowers perfect, solitary. Stem leafy. MAYACACEiE, 526 



Flowers perfect, capitate. Scape leafless. 



XYRIDACE^, 526 



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



ERIOCAULONACE^, 529 



# « * Floivers glumaceoiis, i. e. with scale-like bracts, in place of proper floral 

 envelopes. 

 Bracts single. Slieaths closed. Fruit an aclienium. CYPERACE^E, 531 



Bracts by pairs. Sheaths open. Fruit a caryopsis. GRAMINEjE, 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^, 621 

 Sporangia borne on the back or margin of fronds circinate in vernation. FILICES, 622 

 Sporangia borne in spikes or panicles. Fronds not circinate. OPHIOGLOSSACEiE, 636 

 Sporangia solitary in the axils of small leaves. LYCOPODIACE.^, 638 



Spores of two kinds, large or small. 

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



SELAGINELLAOE^, 639 

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



ISOETACE.E, 640 

 Sporangia enclosed in a peduncled sporocarp. Leaves 4-foliate. MARSILIACE^, 640 

 Sporangia enclosed in a sessile sporocarp beneath branching floating stems. 



SALVINIACE^, 641 



