24 SPUING FLORA OF MANHATTAN. 



35. EUPHORBIACEAE. 



Flowers monoecious or dioecious, mostly apetalous. Ovary free, 

 3-celled, 3-ovuled. Fruit a capsule. 



EUPHORBIA, L. 



Flowers monoecious, naked, enclosed in a cup-shaped involcure, the 

 whole likely to be mistaken for a single flower. Staminate flowers, 

 several in each involucre, consisting of a single stamen jointed on its 

 pedicel. Pistillate flower one, pedicelled. Involucre often provided 

 with 4-5 thick glands with colored appendages, making the resemblance 

 to a flower still more striking. Herbs with milky juice. 



E. Oyparissias, L. Erect perennial with linear, entire leaves 

 scattered along the stem, the upper rounded. Inflorescence umbellate. 

 Escaped from gardens. 



E. nutans, Lag. Annual. Stem ascending or erect, slender, nearly 

 smooth. Leaves oblong, serrate, opposite. Open places, common. 



E. maculata, L. Prostrate, hairy annual. Leaves oblong, often 

 with a brown spot. Open places, common. 



TRAGIA, L. 



Flowers apetalous, monoecious, racemose. Calyx present. 



T. stylaris, Muell. An erect perennial, hispid, with stinging hairs. 

 Leaves ovate to oblong, coarsely toothed. Dry hills, rare. 

 36. ANACARDIACEAE. 



Sepals, petals and stamens 5 Ovary 1-celled, 1-ovuled Styles and 

 stigmas 3. 



RHUS, L 



Shrubs with compound leaves and small greenish or yellowish 

 flowers. 



li. aromatica, Ait. Flowers in compact clusters which develope 

 before the leaves. A low, upright shrub. Leaves 3-foliate. Rocky 

 bluffs, frequent. 



B. radicans, L. Flowers in loose axillary panicles, developing after 

 the leaves. An upright shrub or high climbing vine. Leaves 3-foliate. 

 Woods and thickets, common. 



37. CELASTRACEAE. 



Sepals, petals and stamens 4-5, the latter alternate with petals and 

 inserted on a disk surrounding the ovary. Shrubs with simple leaves. 

 CELASTRUS, L 



Flowers greenish yellow, in terminal racemes. Leaves alternate. 

 Fruit globose. 



C scandens, L. A twining vine, with ovate or oval, finely serrate 

 leaves. Upland woods, frequent. 



EUONYMUS, L. • 



Flowers dark red in axillary clusters. Leaves opposite. Fruit lobed. 



E. atropurpureus, Jacq. An upright shrub with 4-sided branches. 

 Parts of flower usually in fours Woods, frequent. 



38. STAPHYLEACEAE. 



Flowers perfect, regular. Stamens as many as petals Shrubs with 

 opposite, compound leaves. Ovary 3-celled. 



