Jones: Flora of Illinois, 98. Anacardiaceae 177 



96. Celastraceae Lindl. — Staff-tree Family 



1 . Leaves opposite; flowers axillary, cymose or solitary; capsules 4-5-loculed, usually 

 lobed I . Euonvmus 



I . Leaves alternate; flowers in terminal racemes; capsules 3-Ioculed, subglobose 



- 2. Celastriis 



1. EUONYMUS L. 

 L Erect shrubs. 



2. Leaves petioled; flower-parts commonly in fours; capsules smooth; woods 



near streams, throughout III. May-July. Wahoo 



E. atropurpureus Jacq. 



2. Leaves nearly sessile; flower-parts commonly in fives; capsules rough- 

 warty; woods, rare and local. May E. americanus L. 



L Decumbent shrubs, rooting at the nodes; woods, local E. obovatus Nutt. 



2. Celastrus L. 



C. scandens L. Climbing Bittersweet. Rich soil, common. May-June. 



97. Aquifoliaceae DC. — Holly Family 



(.Leaves usually entire; sepals minute, deciduous; petals linear 1. Nemopanihus 



I. Leaves (in our species) toothed; sepals persistent; petals oval 2. Ilex 



I. Nemopanthus Raf. — Mountain Holly 

 N. mucronata (L.) Trel. Swamps, rare. Cook and La Salle counties. May. 



2. Ilex L.— Holly 



L Leaves obovate, rounded at the apex, crenate; calyx-lobes not ciliate;^ nutlets 

 ribbed; edges of ponds and swamps, in the counties bordering the Mis- 

 sissippi, Wabash, and Ohio rivers. May. Possumhaw. Swamp Holly 



/. decidiia Walt. 



L Leaves elliptical, acuminate, serrate; calyx-lobes ciliate; nutlets smooth; 



swamps, more frequent in the n. counties. Winterberry 



/. verticillata (L.) Gray 



98. Anacardiaceae Lindl. — Sumac Family 

 L Rhus L. 



(Toxicodendron Mill.; Schmalizia Desv.) 

 L Leaves with 7-31 leaflets. 

 2. Leaflets decurrent on the rachis, which is therefore conspicuously winged; 

 fruit red, pubescent; roadsides, fields, and open woods, s. 111., extend- 

 ing northwestw. to Pike Co., and northeastw. to Lawrence Co.; also in 



Kankakee Co. July-Aug. Shining Sumac. Dwarf Sumac 



R. copallina L. 



2. Leaflets not decurrent; rachis not winged. 



3. Leaflets serrate; fruit red, in terminal clusters. 



