374 BOTANY AND PHARMACOGINOSY. 



Solanuni carolinense (Horse nettle) is a perennial herb having 

 numerous yellow prickles on the branches and leaves. The leaves 

 are oblong or ovate, irregularly lobed (Fig. 176). The flowers 



Fig. 176. Horse nettle (Solanum carolinense'): A, portion of shoot showing flowers 

 and fruits and spines on leaves and stem; B. longitudinal section of spine (s) and portion 

 of stem showing glandular (g) and non-glandular (h) hairs, and cells containing crypto- 

 crystalline crystals (ca) ; C, thick-walled, strongly lignified cells of spine; D, portion of 

 fibrovascular bundle showing cryptocrystalline crystals (ca) of calcium oxalate in the cells 

 accompanying the sieve; E, stellate, non-glandular hair; F, stoma of stem; G, diagram of 

 cross section of flower showing sepals (s), petals (p), stamens (a), ovary (c) ; H, longitudinal 

 section of flower; I, stamen showing terminal pores; J, cross section of 2-locular berry; 

 K, pollen grains, 30 y- in diameter. 



are white or light blue and occur in lateral cymes. The fruit is 

 an orange-yellow, glabrous berry. The plant is common in waste 

 places in Canada and the United States east of the Mississippi. 



