66 JUGLANDACEAE 



2. G. cernua (L.) Kuntze. 6 / -20 / high : leaves 4'-12' long : spike 

 G'-?' long : callosities prominent, hairy. Occasional on a moist prairie 

 south of Lee's Summit. August-September. 



3. G. praecox (Walt.) Kuntze. 9'-24 x high: leaves linear, 4 / -12 / 

 long : spike dense, much-twisted, downy-pubescent, 2 / -5 / long : callos- 

 ities rather small. Wet grassy places along Missouri River at Courtney. 

 Rare. July-September. 



4. G. gracilis (Bigel.) Kuntze. 8 / -20 / high from tuberous thickened 

 roots : leaves withering away before flowering time : spikes V-% long : 

 flowers very small : callosities nipple-shaped. One plant in a dry open 

 wood near Independence. September. 



6. APLUCTRUM Nutt. 



Scapose herbs from thick, globular bulbs. Leaf solitary. Flowers 

 bracted, in terminal racemes. Petals and sepals similar. Lip not 

 spurred, 3-ridged. Pollinia four. 



1. A. spicatum (Walt.) B.S.P. ADAM-AND-EVE. Leaf ovate, 

 strongly-nerved : racemes several-flowered : flower ]/ long, greenish 

 brown, speckled with purple. In rich woods. Courtney to Sibley and 

 Levasy. Rare and local. June. 



Subclass 2. DICOTYLEDONES. 



Seeds with two cotyledons. Stems exogenous. Leaves usually pin- 

 nately veined, and parts of flowers not usually in threes or sixes. 



FAMILY 28. JUGLANDACEAE Lindl. 



Trees with alternate, pinnate leaves and monoecious flowers. Stami- 

 nate flowers in drooping, densely-flowered catkins, consisting of 3-many 

 stamens surrounded by an unequally lobed calyx. Fertile flowers few or 

 solitary, consisting of an inferior 2-4-celled, 1-ovuled and a regular 3-5- 

 lobed calyx. Fruit a nut, enclosed in a husk. 



Stamens 8-40 ; husk indehiscent. 1. JUGLANS. 



Stamens 3-10 ; husk dehiscent. 2. HICORIA. 



1. JUGLANS L. 



Bark fragrant. Calyx of staminate flowers 3-6-lobed. Pistillate flowers 

 with a 4-lobed calyx and 4 small petals. Nuts large, enclosed in a fibrous- 

 fleshy husk. 



1. J. nigra L. WALNUT. A large tree, sometimes 150 high : leaflets 

 7-11 pairs, lanceolate, pubescent beneath, serrulate : fruit spherical, the 

 nut corrugated. Abundant along streams. May-June. 



2. HICORIA Raf. 



Calyx of staminate flowers, unequally 2-3-lobed. Pistillate flowers 

 with a 4-lobed calyx and no petals. Nuts enclosed in a dry, more or 

 less completely 4-valved husk. 



