G(i JUGLANDACEAE 



2. G. cemua ( L. ) Kuntze. 6'-20' hif;h : leaves 4'-12' long : spike 

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

 south of Lee's Summit. Aujiust-September. 



3. G. praecox (Walt.) Kuntze. 9'-24^ high: leaves linear, 4M2'' 

 long : spike dense, niuch-twisted, downy-pubescent, 2^-5' long : callos- 

 ities ratlier small.— Wet grassy places along Missouri Eiver at Courtney. 

 Kare. July-.September. 



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

 roots : leaves withering away before flowering time : spikes V-2V long : 

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

 wood near Independence. September. 



6. APLECTRUM 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. Ad.\m-and-Eve. Leaf ovate, 

 strongly-nerved : racemes several-flowered : flower V 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 paits 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 caly.x. 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. IIicORiA. 



1. JUGLANS L. 



Bark fragrant. Cal^'x of staminate flowers 3-G-lobed. Pistillate flowers 

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

 fleshy husk. 



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

 7-11 pairs, lanceolate, pul)escent beneath, serrulate: fruit spherical, the 

 nut corrugated. — Abundant along streams. May-June. 



2. HICORIA IJaf. 

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

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

 less completely 4-vaIved husk. 



