194 



POPULAR FLORA. 



ers scattered in a long and naked slender spike ; calyx greenish, 4-parted ; stamens 5 ; styles 2, 

 bent down in fruit. Tiiickets. F. Virglnianuin. 



<- -t- Somewhat climbing, or supported by recurved sharp prickly bristles on the strong angles of the 

 stems, &c.; fiowers white or flesh-color in small racemes or lieada; root annual. The prickly 

 angles cut like a saw, whence the plants are called Tear-Tlmmi. 



11. Akeow-leaved K. Leaves arrow-shaped (Fig. 100), short-stalked; akene 3-angled. P. sagiUdium. 



12. IIalbehd-leaved K. Leaves halberd-shaped (Fig. 102), long-stalked ; akene flattish. Low 

 grounds. P. arifblium. 



*- -t- -1- Twining annuals, with smooth stems and greenish or whitish fiowers in panicled racemes; 

 leaves heart-shaped and partly halberd-shaped. 



13. Climbing K. Smooth, climbing high over shrubs, &c. ; racemes leafy ; 3 of the calyx-lobes more 

 or less winged in fruit. Thickets in low ground. P. dumetm-um. 



14. Bindweed K. I^ow, stems roughish ; racemes corymbed; three of the calyx-lobes ridged in the 

 middle. Cult, and waste grounds. P. Convolvulus, 



80. LATJEEL FAMILY. Order LAURACE.^. 



Trees or shrubs, with spicy bark and leaves ; the latter marked with transparent dots 

 under a magnifying-glass, alternate and simple ; the calyx of 6 petal-like sepals. Stamens 



9 or 1 2 on the very bot- 

 tom of the calyx ; the 

 anthers opening by up- 

 lifted i-alves. Pistil sim- 

 ple, with a one-celled 

 ovary, in fruit forming 

 a berry or drupe, one- 

 seeded. Flowers gener- 

 ally polygamous or dioe- 

 cious in spring. — Avery 

 well-marked family, most- 

 ly in hot countries, but 

 we possess two or three 

 representatives. 



484. sterile flower of Sassafras -185. Ferlile flu" er of the same. 48 J Magnified Btameii, 

 witli two fi/[7id.' at llie Ijase , tlie antlier openingliv two large anri two Bmailvalvea 487 Pistil, 

 ^ithtlie ovaiy rlivieter! to sliiiw the ovule haugiDg from tlie lop. 488. Leaf and cluster of fruit. 

 , Lower half of fruit, cut across. 



489. 



Flowers perfect ; stamens 9, with good anthers, and 3 sterile ones. Tree, with entire 



oblong leaves; common South, (Pirsta) Ked-Bay 



Flowers dioecious or nearly so, greenish-yellow : stamens 9, about 3 of them with yel- 

 low glands at the base of the filaments (Fig. 486). 

 Anthers 4-celled and 4-valved. Tree: flowers in stalked corj'mbs, appearing with 



the leaves; some of the latter 3-lobed, (Sassafras) Sassafras. 



Anthers 2-celled and opening by a single valve to each cell. Shrub: flowers in ses- 

 sile clusters, appearing earlier than the entire leaves, (.Benzoin) Spicebush 



