40 



VARIOUS FOOD-PLANTS 



Fig. L'.s.^Jiatternut {J uglansciiierca, Wahwit b'.unily, J 'cjlandacece). A t-nig 

 in autumn bearing a single leaf and a ripr fruit. Twig, in spring bear- 

 ing two staminatc flower-olusters. A single staminate flower viewed 

 from above. A pistillate flower showing the two protruding stigmas. 

 A nut removed from its husk, showing the deeply sculptured shell. 

 The flowers, enlarged; the other parts reduced. (Britton and Brown.) — 

 The plant is a forest tree becoming sometimes 30 m. tall; old bark 

 roughish, gray; young twigs and leaves stiek>'~hairy; flowers brownish 

 green; stigmas red; fruit green turning to brown, covered thickly with 

 very sticky hairs, nut blackish. 



Fig. 29. — Pecan (Carija olivceformis, Walnut Family, J uijlcnddcca:) . Twig 

 in spring after removal of all the leaves but one and all the staminate 

 flower-clusters below it except the lower part of their stalks. At the 

 tip of the twig is the small cluster of pistillate flowers. Three-branched 

 staminate flower-clu.ster. ' Staminate flower, top view. Stamen. 

 Fruit. Nut. after removal of the husk. Flower and stamen, enlarged. 

 (Britton and Brown.) — The plant is a large slender tree, becoming 

 .50 m. tall; bark somewhat rough; young twigs and leaves hairy; mature 

 foliage nearly smooth; flowers greenish ; fruit hrowni.sh green ; nut 

 light brown. 



The native home of the various nuts and of other food- 

 plants, tlie length of time they have been cultivated, and 

 certain other matters of ndated interest, will be discussed 

 at the end of this chapter. 



34. Pulse, under which name are iiichidcd ]>(^as (Figs. 37. 



38), and l)eans (Figs. 311. -10), i agree with grains and nuts 



' In the reference to the illustrations the readin- will observe that the 

 fsaiiio Arabic numeral sometimes applies to ninre than one cut, Roman 



