BUETTNERIACEAE 863 
4. WALTHERIA L. Herbs, shrubs, or trees. Leaf-blades toothed. In- 
volueel of 3-bractlets. Sepals 5, united to the middle or above it. Petals 9, 
T spreading, marrow, slender-clawed, 
ellow amens 5: anthers with 2 saes: 
iek.—About 35 species, tropical American. 
1. W. americana L. Stem erect or rarely 
diffuse and prostrate, 6-16 dm. long, often 
: r 
lar-ovate, 1-8 em. long, dad or dentate- 
serrate, stout- Cip flow in dense 
uM usters: ca m long at 
matu ae lobes us to Tuch or 
subulate-lanceolate, apres nearly as long as 
the tube or shorter: petals 3-4 mm. long: 
capsule about 2 mm. long, eee rounded 
or truncate at the top and long-hairy. —Hammocks, po and sand- dunes, 
S pen. Fla. and the Keys. Adv. up Hee y dn —(QF. I., Mex., C. A., 8. A.)— 
All year —Reputed to have medicinal properties. 
5. AYENIA L. Herbs often partially woody. Leaf-blades toothed. In- 
 involute, Stamens 5; anthers with three parallel sacs. Staminodia present. 
Ovary 5- celled. Capsule murieate, depressed.—About 10 species, tropical 
American. 
ues 6-6.5 mm. long; blades about 1. 5 mm. wide; appendages stout, over 
ong. SUD I E DE. 
Petals 4-4.5 mm. long: pan n 1 mm. wide; appendages 
slender, less than 0.5 mm 2. A. pusilla. 
1. A. euphrasiaefolia Gris eb. Tap- ~ dide Sos prostrate: leaf-blades 
predominately suborbieular to renifor t m. long, sharply few-toothed: 
alyx abopt 3 
capsule 4-5 
tuberculate.—Pinelan nds, aid ade E d 
d lowe I.)— 
2. A. pusilla L.  Tap-root slender: stem 
—BSpr = 
6. FIRMIANA Marsigli. Shrubs or trees. Leaf-blades entire or lobed. 
Flowers unisexual or polygamous. Sepals 5, or rarely 4, often petaloid. 
