380 CALLITRICHACEAE 
CALLITRICHE, L. 
Characters, those of the family. 
Without colored bracts. 
Terrestrial, growing in muds. «: fs) ee i oe eC meron 
Aquatic, istibmersed’ Sis hicaiy.. “ac. Js,) cok Yoh pan ee) ne Comme enTatie 
With colored bracts. 
Aquatic, submersed or growing in mud. 2 
Hrditenovale es, bee we el aieu ish le. e ace) cel me te, yee kn CoMmne Ree zea 
Fruit pear-shaped =. . . . . » « « « « G. heteropnyiia 
1. C. deflexa, A. Br. (Fig. 5, pl. 89.) TERRESTRIAL STaRworT. (C. 
Austini, Engelm.). Plant forming tufts on moist soil, stem 4 to 2 in. 
high. Leaves very small (about 1/10 in. long), spatula-formed, 3-nerved, 
tapering at base. Fruit notched at each end. In wet soil. Summer. 
2. C. palustris, L. (Fig. 6, pl. 89.) Vernan Water Srarwort. 
Growing in mud or in the water. Stems 2 to 10 in. long, very slender. 
Leaves of two sorts, the floating pear-shaped or spatula-formed, about 
3 in. long, the submersed, linear of about the same length. Fruit borne 
in the axils of the higher leaves, enclosed in two small bracts. Common 
in stagnant waters. July-Sept. 
3. C. heterophylla, Pursh. (Fig. 7, pl. 89.) Larce Warer Srar- 
wort. Resembles No. 2. In No, 2 the fruit is higher than broad, thick- 
est at base, without a visible pedicel, its lobes keeled, or acutely angled. 
In this species the fruit is broader than high, its lobes obtusely angled. 
In quiet waters. July-Sept. 
4. C. autumnalis, L. (Fig. 8, pl. 89.) NorTuerN WATER STAR- 
wort. (C. bifida, (L.) Morong.) Stem entirely submersed; leaves all 
alike, linear or narrow lance-shaped, notched at the apex, somewhat clasp- 
ing at the stem. In flowing waters. July-Sept. 
Order VIII—SAPINDALES. Order of the Sapindales or 
Soapberries 
The plants of this order have the general characteristics of the 
last (Geranium Order), except that the ovules are in an opposite 
position, that is, with the ovules pendulous, but with the ridge 
connecting the two ends (the raphe) away from the axis of the 
ovary, or ascending from the base of the ovary and inverted. On 
this somewhat obscure and quite technical character the classifica- 
tion of this large group depends. ‘The families of the order in- 
clude herbs, woody heath-like plants (empetraceae), shrubs and 
trees. 
Herbs. 
Flowers regular or nearly so. . . LIMNANTHACEAE 
Flowers very irregular. . . . . BALSAMINACEAE 
Woody, heath-like, depressed plants . . . EMPETRACEAE 
