XXIV ARTIFICIAL KEY TO THE NATURAL ORDERS. 



Stamens 6. Perianth adherent to the whole ovaxy. AMARYLLIDACE^, 455 



* * Perianth fr&e from the ovary : 

 ■*- Its 6 or rarely 4 divisiom similar , not glumaceous nor furnished vnth glumaceous bracts. 

 Anthers turned inwards. 

 Stamens 3, or when more unlike or sterile. Style 1. PONTEDERIACE^, 483 



Stamens 6, rarely 5 or 7. Styles 2-3, separate. Flowers (^oecious. SMILACE^, 461 



Stamens 6, rarely 4. Styles united into one. LILIACE^, 126 



Anthers turned outwards (except Tofieldia). 

 Seeds with albumen. Leaves grass-like or with a proper blada MELANTHACE^, 472 



Seeds without albumen. Leaves rush-like, without a blade, JUNOAGINEiB, 436 



•*-■*- Its Q divisions similar and glumaceous (except Narthecium). JUNCACEiE, 479 - 



M- •*- -I- Jfs divisions of two hinds^ viz. 3 herbaceoia or Tnembranaceeus sepcds and 8 colored 



petals ; not furnished vnth glumaceous bracts. 

 Pistils numerous, distinct. Stamens from 6 to many. ALISlVIACE^, 486 



Pistil (ovary) one, 3-ceUed, many - several-seeded. 

 Styles 1. Thick or scurfy-leaved epiphytes. BROMELIACB^, 458 



Styles or sessile stigmas 3. Leaves whorled. TRILLIACE^, 461 



Pistil (ovary) one, 2 - 8-ceUed ; the cells 1 - 2-6eeded. OOMMBLYNAOEiE, 485 



Pistil 1 : ovary 1-celled, with parietal placentae. XYRIDACE.^, 487 



■t^ -i- -t- ■*- Its divisions of two hinds^ or the inner {corolla) rarely wanting; the outer {calyx) 

 mostly glumaceous or chaffy ; the flowers also furnished with glumaceous or chaffy bracts. 

 RusliAike herbs : flowers in dense heads. 

 Pod l-celled, many-seeded, with 3 parietal placentae. XYRIDACEiE, 487 



Pod 2 - 3-celled, 2 - 3-seeded. ERIOCAULONACE^, 488 



C. Flowers destitute of any proper perianth^ except somstim^s small scales or bristles, but cov- 



ered by glumes^ i. e. husk-like or scale-like bracts. 

 Glume a siogle scale-like bract with a flower in its axil. CYPERACEiB, 490 



Glumes in pairs, of two sorts. GRAMINEiE!,-535 



Series II. CKYPTOGAMOUS or FLOWERLESS 

 PLANTS: those destitute of stamens and pistils, in fructification 

 producing spores instead of seeds. 



Class HI. ACKOGENOUS PLANTS. 



Plants witli a stem containing -woody tissue and vessels, as does the foliage 

 ■when there is any (in the form of veins). 



Fructification borne on the leaves (fronds), commonly on their hacks or mar^ns. riLICES, 587 

 I^ctification of ssTeral spore-cases borne on the under side of the shield-shaped stalked 

 scales of a terminal spike or cone. Leaves none, except a whorl of teeth at each 

 joint of the stem. BQUISBTACES), 585 



Fructification of spore-cases in the axil of small simple leaves or bracts. LTCOPODIACEiE, 603 

 Fructification at the base of leaves or naked branches. Aquatics. HYDROPTERIDES, 606 



Class IV. ANOPHYTES. (Mosses.) 



Plants consisting of cellular tissue only, with stem and foliage distinct, 

 or sometimes the two confluent into a foliaceous body (frond). 



Spore-cases mostly opening by a lid. Leaves distinct. MUSGI, 607 



gpore-cases not opening by a lid. Leaves distinct or confluent into a frond. HEPATICffl, 682 



