64 GERANIACEZ. (GERANIUM FAMILY.) 
Synopsis. 
1. TRIBULUS. Carpels 5, transversely few-celled, few-seeded. Herbs. 
2. KALLSTROMIA. Carpels 10, 1-celled, 1-seeded. Herbs. 
8. GUAIACUM. Carpels 2-5, compressed, 1-seeded. Trees. 
1 TRIBULUS, L. 
Sepals 5, imbricated in the bud, deciduous. Stamens 10. Ovary 5-celled, 
with 3-5 suspended ovules in each cell. Carpels of the fruit 5, spiny on the 
back, transversely divided into 2 —5 one-seeded cells, separating at maturity, with- 
out a central axis. Albumen none. — Prostrate herbs. Leaves abruptly pinnate. 
Peduncles solitary, 1-flowered. 
1. T. eistoides, L. Leaves unequal; leaflets 6 — 16, linear-oblong, mucro- 
nate, silky beneath; peduncles as long as the leaves; flowers large, yellow. — 
Key West. — Stems 19-2? Jong, hairy. Petals 2-3 times as long as the 
calyx. 
2. KALLSTROMIA, Scop. 
Sepals 5-6, persistent, imbricated in the bud. Stamens 10-12. Ovary 10- 
12-celled, the cells 1-ovuled. Carpels of the fruit 10-12, separating from each 
other and from the central axis. Albumen none. — Hairy herbs, with the habit 
of TRIBULUS. 
1. K. maxima, Torr. & Gray. Leaves nearly equal; leaflets 6-8, ob- 
liquely oblong, mucronate, the terminal pair larger; peduncles shorter than the’ 
leaves; petals as long as the bristly calyx, yellow; carpels rugose on the back. 
— Key West and Savannah. — Stems 1? - 2° long. 
3. GUAIACUM, Plum. 
‘Sepals 5, deciduous. Stamens 10, with naked filaments. Ovary stalked, 
2-5-celled, the cells 8-10-ovuled. Carpels of the fruit 2—5, compressed, 1- 
seeded. Seed-coat fleshy. Embryo straight in hard thin albumen. — Trees. 
Leaflets reticulate. Flowers blue or purple. 
1. G. sanctum, L. Branches opposite and forking, jointed, pubescent 
when young; leaflets 6 or 8, obliquely obovate or oblong, mucronate, entire; 
peduncles sings or clustered at the forks of the branches, 1-flowered, shorter 
than the leaves; sepals and petals obtuse; flowers blue. — South Florida. — À 
small tree with gr bark. Flowers }/ wide. Fruit obovate. 
OrDER 82. GERANIACEJE. (GERANIUM FawrLY.). 
Herbs or shrubby plants, with tumid joints, alternate or opposite pal- 
mately lobed stipulate leaves, and hypogynous and decandrous flowers. 
— Sepals 5, imbricated in the bud, persistent. Petals 5, convolute in the 
bud, deciduous. Stamens monadelphous at the base ; the 5 exterior ones 
Shorter and often sterile. paries 5, Pole, and, with the 
