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 

 oo Flowers, if in dense spikes, with showy 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 

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

 k Ovaries 2-many, distinct. 

 / Leaves linear, basal; bog plants. 



SCHEUCHZERIACEAE (in NAIAD ACEAE) $2 



// Leaves not both linear and basal 



m Creeping marsh plants SAXIFRAG ACEAE 476 



mm Not creeping marsh plants. 



n Stamens perigynous ROSACEAE 490 



nn Stamens hypogynous RANTTNCULACEAE 411 



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



PAPAVERACEAE 437 

 kkk Ovary i -celled, i-ovuled. ^V 



/ 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 NYCTAGINACEAE 382 



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



present POLYGONACEAE 350 



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



sheath-like stipules. 

 n Leaves parallel-veined; moncecious monocotyledons. 



SPARGANIACEAE (in TYPHACEAE) 39 

 nn Leaves netted-veined; dicotyledons. 



o Styles or stigmas i URTICACEAE 341 



oo 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. 



AMARANT ACEAE 377 

 qq Inflorescence not scarious-bracted; stipules none. 



CHENOPODIACEAE 368 

 qqq Stipules scarious or none; leaves opposite. 



CARYOPHYLLACEAE 387 

 kkkk Ovary 2 many-celled. 



/ Flowers in involucrate heads ERIOCATJLACEAE 236 



// Flowers not in involucrate heads. 



m Ovary 2-celled, stamens 8-10 .SAXIFRAGACEAE 476 



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



n Ovules many in each cell Aizo ACEAE (FlCQlDEAE) 383 



nn Ovules 12 in each cell. 

 o Plants procumbent; leaves alternate. 



BUXACEAE (in EUPHORBIACEAE) 598 

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



EUPHORBIACEAE 585 



