KICOIDEiE. 65 



1. MAMIL.LAIIIA, ilaworth. 

 L M. Ooodridgii, Scheer. Petals about 8, ovate, a\vTied, dull yellowijh. S. CkL 



2. ECHINOC ACTUS, Unk & Otto. 

 1. B. viridescena, Nutt. Sepals and petals numerous, greeniah: fruit scaly. S. CaL 



3. CEREUS, Haworth. 

 1. 0, Emoryi, Engelm. Flowers greenish yellow; fruit subglobose, spiny. S, CaL 



4. OPUNTIA, Toumefort. 



Jointi much flattened, obovate: fruit juicy ^. .- 1, 3 



Joints cylindrical : fruit green, fleshy : flowers red 8 



1. O. Engelmanni, Salm. Flowers yellow, 3 inches long. vSanta Barbara, S. 



2. O. Ficus-Indica, MilU Fruit delicious. The Prickly Pear. 



3. O. prolifera, Eugelra. Tree-like with spiny tubercles. San Diego. 



FICOIDE^. 



Ovary inferior : petals and stamens numerous : very fleshy ,, ,, 1 



Ovary superior: petals none: leaves opposite or whorled. 



Calyx-lobes 5, petaloid: stamens many: succulent 9 



Sepals 5, greenish: stamens 3 to 10: styles 3: not succulent. 3 



1. MESEMBRYANTHEMUM, Linnfflus. 



1. M. aequilaterale, Haworth. leaves equally S-sided, very thick, oppoaitci, 



2. M. coccineum, Haw. Leaves semi-cylindrical, a line broad- 



3. M. crystallinum, L. Leaves flat, covered with glistening papillaa, 



2. SESUVIUM, Linnaeus. 

 1. 8. Portulacastruzn, L. Calyx 3 to 5 lines long, more or leaa purpllidi. 



3. MOLLUGO, L. 

 1. M. TOrticillata, L. Slender: leaves spatulate: flowers fascicled, axlUary. 



UMBELLIFERi!:. 



Hvba with aaually hollow atemB. aheathing petioles and small flowars in simple 



