66 JUGLANDACEAE 



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

 6'-7' long : callosities prominent, hairy. — Occasional on a moist prairie 

 south of Lee's Summit. August-September. 



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

 long : spike dense, much-twisted, downy-pnbesoent, 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 l'-2J' long : 

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

 wood near Independence. September. 



6. APLIJCTRUM Nutt. 



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

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

 spurred. Bridged. Pollinia four. 



1. A. spicatum (Walt.) B.S.P. Adam-and-Eve. Leaf ovate, 

 strongly-nerved : racemes several-flowered : flower 1' 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-oelled, 1-ovuled and a regular 3-5- 

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



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



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



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. 



