FICOIDER, 65 
1, MAMILLARIA, Haworth. 
1, ML Goodridgii, Scheer. Petals about 8, ovate, awned, dull yellowish. §. Cal 
2. ECHINOCACTUS, Link & Otto. 
1. E. viridescens, Nutt. Sepals and petals numerous, greenish: fruit scaly. 8, Cab 
3. CEREUS, Haworth. 
1. ©. Emoryi, Engelm. Flowers greenish yellow: fruit aubglobose, spiny. 8. Cal 
4. OPUNTIA, Tournefort, 
Joints much flattened, obovate: fruit juicy. ..............sec eee ec ce eees Boialaletate 1,2 
Joints cylindrical: fruit green, fleshy: flowers red... 00.0... eee c cece e eet eeceenteee 3 
1. O. Engelmanni, Salm. Flowers yellow, 3 inches long. Santa Barbara, 8 
2. O. Ficus-Indica, Mill. Fruit delicious. The Prickly Pear. 
3. ©. prolifera, Engelm. Tree-like with spiny tubercles. San Diego. 
FICOIDEE. 
Ovary inferior: petals and stamens numerous: very fleahy......+-+eesees rrereress Aree | 
Ovary superior: petals none: leaves opposite or whorled. 
Calyx-lobes 5, petaloid: stamens many: succulent.... ....-..eeeeeeseeececees 2 
Sepals 5, greenish: stamens 3 to 10: styles 3: not succulent...........-.+.0000- 3 
f. MESEMBRYANTHEMUM, Linneus. 
1, M. eequilaterale, Haworth. Leaves equally 3-sided, very thick, opposite, 
2. M. coccineum, Haw. Leaves semi-cylindrical, a line broad. 
3. M. erystallinum, L. Leaves flat, covered with glistening papilla. 
2. SESUVIUM, Linnzus. 
1. 8. Portulacastrum, L. Calyx 3 to 5 lines long, more or lesa purplish, 
8. MOLLUGO, L 
1. ML werticillata, L. Slender: leaves spatulate: flowers fascicled, axillary. 
UMBELLIFERS. 
Herbs with usually hollow stems, sheathing petioles and «mall flowers in simple oF 
10 
