. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. SPERMATOPHYTA—JUGLANDALES 401 anth adnate to the ovary; anthers erect, 2-celled; pistillate flowers usually 2- bracteolate, calyx 4-lobed or with petals; ovary inferior, 1-celled or incom- pletely 2-4 celled; ovule solitary, erect; styles 2; fruit generally a drupe, dehi- scent or indehiscent; the involucre regarded by some as the calyx, encloses the nut, which is incompletely 2-4 celled; endosperm none, cotyledons corrugated, oily.
. A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations. Poisonous plants. SPERMATOPHYTA—JUGLANDALES 401 anth adnate to the ovary; anthers erect, 2-celled; pistillate flowers usually 2- bracteolate, calyx 4-lobed or with petals; ovary inferior, 1-celled or incom- pletely 2-4 celled; ovule solitary, erect; styles 2; fruit generally a drupe, dehi- scent or indehiscent; the involucre regarded by some as the calyx, encloses the nut, which is incompletely 2-4 celled; endosperm none, cotyledons corrugated, oily. One family Juglandacea^. The English Walnut (Juglans regia) from the Mediterranean region to the Himalayas is extensively cultivated in Cali- fornia, Spain, France, Italy, and other warm temperate countries; butternut (Juglans cinerca), from New Brunswick to North Dakota and Nebraska, pro- duces a valuable wood which is, however, inferior to the black walnut (Juglans nigra), distributed from Massachusetts to Minnesota, Kansas and Texas, but. Fig. 183. Cork Wood (Leitneria fioridana). The wood of this plant is extremely light. It grows in swamps in Southern Missouri and Florida. (W. S. Dudgeon.) the timber is becoming scarce. There is a popular impression that the black walnut is poisonous to vegetation growing under the trees. California Walnut is /. californica. The Japanese walnut (/. Sieholdiano) produces a large, thick- shelled nut. The bark of Juglans contains juglandic acid C^^H^Og. The Pterocarya caucasica is a native to the Trans-Caucasus. The genus Carya is native to North America and yields valuable timber and nuts. The nut of the pecan (Carya illinoensis) is an important article of commerce in Texas and other southern states. The wood is also used. The shellbark hickory (Carya ovata) and the Missouri hickory (C. laciniata) supply valuable woods which are used in the manufacture of ax handles and for parts of wagons. The nut of the latter-is large but like the prece
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