Ordek 63.— the UMBELWORTS. 209 



P. grandiflo'ms. Large-flowered Syringa. A very showy shrub, 6f. high. Leaves 

 ovate, acuminate, 3-veined. Stigmas 4, styles united into 1. Flowers large, in 

 umbels of 2-7, white nearly inodorous. Cultivated, but wild at the South. June. 



P, oorona'rius. Mock Orange. Stems 5-8f. *iigh. Leaves oval and ovate, short- 

 pointed, feather-veined. Styles and stigmas 4, distinct. Flowers numerous, 

 white, handsome, very fragrant. Cultivated. June. 



4. HYDEAN'GEA. Hydrangea. 

 Flowers in cymes, the marginal ones generally barren, with the sepals 

 much enlarged (that is, the cymes are radiant). The fertile flowers are 

 small, calyx about 4-toothed, petals 4, stamens 8 or 10 ; capsule 2-beaked, 

 many-seeded. 



1 H, arbores'cens. Big Wild H. Lea^ves ovate, obtuse or cordate at base, nearly 



smooth. Cymes flat. Shrub 4 to 6 feet high. M. "W. Cultivated. 



2 H. qneroifo'lia. Oak-leaved H. Leaves deeply sinnate-lobed. Cymes in the form 



of a panicle. South. ■ Cultivated. (See i''»j'. 482.) 

 8 H. radia'ta. Silver-leaved S. Leaves ovate, clothed with a silvery-white down 



beneath. Cymes flat. Shrub 6-*f. high. S. t 

 4 H. hoTteu'sis. Changeable S. Leaves elliptical, narrowed at each end, smooth. 



Cymes mostly all barren, changing from green to white, pink, blue, cfcc. 



Order LXIII. UMBELLIFER^. The Umbelworts. 



Herbs with hollow, furrowed stems, simple or compound leaves; 

 no stipules, but with a broad sheathing base to the petioles ; 

 the small flowers in umbels, and the calyx wholly adherent to the ovary ; 

 the petals and stameTis 5, standing on the top of the ovary ; 

 the styles 2, and the fruit dry, its 2 carpels seed-like and separating, 

 marked outside by ribs and furrows running lengthwise. 



Analysis of the Genera. 



* Plants growing wild, some of them cultivated for the eatable root 2 



* Plants never wild, but cultivated for their fruit, <fec q 



2 Flowers white, rarely rose-colored or cream-colored 3 



2 Flowers yellow, or (in one instance) dark purple 4 



8 Umbels simple, leaves simple. Little creeping wet plants a 



8 Umbels regularly compound, the flowers not sessile. . .-.c 

 S Umbels Irregular, flowers in crowded heads, sessile. . . .b 



4 Fruit decidedly flattened on the back p 



i Fruit flattened on the sides or not at all o 



