Order 124. Aroidece. 361 



Note. When the upper part of the spadix is without flowers, it is 

 called the appendage. 



1. CRYPTOCORINE. Aquatic or marsh herbs, spadix very 

 slender, its top adhering to the spathe, anthers 2-celled, recurved ; 

 the female flowers form a single row of united ovaries ; fruit of 

 united 2-valved carpels. 



2. LAGENANDRA. Like the last, but the female flowers form 

 a spiral row of many free ovaries with peltate or discoid stigmas, 

 and the fruit is a berry. 



3. PISTIA. A floating stemless herb, leaves sessile, forming 

 an erect cup, spathe small, spadix united to its back; the male 

 flowers consist of a few sessile connate stamens near the top 

 of the spadix, the female of a solitary ovoid ovary. 



4. ARIS^MA. Tuberous herbs, male flowers stalked, anthers 2 

 to 5, female densely crowded, the style short or none, the stigma 

 disciform. 



The two following genera are tuberous herbs, having pinnatifid 

 leaves, which appear after the flowers. 



5. AMORPHOPHALLUS. Male and female flowers contiguous, 

 without neuters, anthers 2 to 4 sessile, berries roundish. 



6. SYNANTHERIAS. Like the last, but male and female 

 flowers distant with interposed neuters. 



The next five genera belong to a tribe in which the leaves are un- 

 divided, often peltate, and the anthers sessile, densely crowded, with 

 very thick connective. 



7. ARIOPSIS. A small tuberous herb, male flowers cylindric, 

 female adnate to the base of the spathes, berry 3 to 6-angleJ. 



8. KEMUSATIA. Leaf solitary entire peltate, spadix very 

 short, male and female flowers separated by neuters, berry 

 small. 



9. COLOCASIA. Coarse herbs with stoutly peduncled spathe. 



10. KHAPHIDOPHORA. Scandent shrubs rooting on trees, 

 spadix sessile, perianth none, the berries many-seeded, 

 confluent. 



11. POTHOS. Climbers, spathe small, sepals and stamens 6, 

 berries 1 to 3-seeded. 



12. ACORUS. Aromatic marsh herbs, leaf sword-shaped, the 

 spathe is the leaf-like continuation of the peduncle, sepals and 

 stamens 6. 



1. CRYPTOCORINE. 

 * C. Roxburghii. Stemless, leaves linear lanceolate, spathe 



