ANALYTICAL KEY TO FAMILIES OF ANGIOSPERMS. XV 



PAGE 



nn Mostly succulent monocotyledons; ovules mostly many 

 (rarely i or 2). 

 o Flowers in dense spikes, greenish, usually with spathes. 



Araceae 229 

 00 Flowers, if in dense spikes, with show)' perianth. 



p Fruit a berry Convallariaceae (in Liliaceae) 269 



pp Fruit a capsule 

 q Leaves pinnately parallel-veined; flowers blue or white; 



in water or mud Pontederiaceae 242 



qq Leaves mostly palmately parallel-veined. 

 r Capsule mostly septicidal; plants rarely bulbous. 



Melanthaceae (in Liliaceae) 254 

 rr Capsule loculicidal; plants mostly bulbous.. Liliaceae 260 

 jj Perianth-parts 2-5, or 2-5-parted. 

 k Ovaries 2-many, distinct. 

 / Leaves linear, basal; bog plants. 



Scheuchzeriaceae (in Naiad aceae) 52 

 // Leaves not both linear and basal 



m Creeping marsh plants Saxifrag aceae 476 



mm Xot creeping marsh plants. 



n Stamens perigynous Rosaceae 400 



nn Stamens hypogynous Raxuxcul aceae 411 



kk Ovary i-celled, many-ovuled; plants with milky juice. 



Papaveraceae 437 

 kkk Ovary 1 -celled, i-ovuled. 



I Flowers in dense fleshy spikes, usually with spathes. .Araceae 229 

 // Flowers not in dense fleshy spikes. 



m Perianth medium-sized, and colored, or small and leaves with 

 sheath-like stipules. 

 n Ovary permanently invested by the perianth-tube; fruit not 



an achene; no sheath-like stipules Nyctagixaceae 382 



nn Ovary plainly free; fruit an achene; sheath-like stipules 



present Polygoxaceae 350 



mm Perianth very small greenish, greenish-white or reddish; no 

 sheath -like stipules. 

 n Leaves parallel-veined; monoecious monocotyledons. 



Spargaxiaceae (in Typhaceae) 39 

 nn Leaves netted- veined; dicotyledons. 



o Styles or stigmas 1 Urticaceae 341 



00 Styles or stigmas 2 (3). 



p Leaves deeply palmately cleft or compound. 



Moraceae (in Urticaceae) 339 

 pp Leaves pinnately lobed, serrate or entire. 

 q Inflorescence scarious-bracted; stipules none. 



Am araxt aceae 377 

 qq Inflorescence not scarious-bracted; stipules none. 



Chexopodiaceae 368 

 qqq Stipules scarious or none; leaves opposite. 



Caryophyllaceae 387 

 kkkk Ovary 2-many-celled. 



/ Flowers in involucrate heads Eriocaulaceae 236 



// Flowers not in involucrate heads. 



m Ovary 2-celled, stamens 8-10 Saxifrag aceae 476 



mm Ovary 3-4-celled, stamens 1-15. 



n Ovules many in each cell Aizoaceae (Ficoideae) 383 



nn Ovules 1-2 in each cell. 

 o Plants procumbent; leaves alternate. 



Buxaceae (in Euphorbiaceae) 598 

 00 Plants erect, or if procumbent, then leaves opposite. 



Euphorbiaceae 585 



