ANACARDIACEAE (SUMAC FAMILY) 147 



A. Sepals 4-5; petals 4-5; stamens 10; stigmas 4-5. — (Gk. Umme = a lake; 



anthos = a flower; from the common lake-shore habitat.) (F. & R. p. 247.) 



Limnanthes 

 AA. Sepals 2-3; petals 2-3; stamens 6; stigmas 1-3. — (Honor of G. H. Floerke, 



a German botanist.) Floerkea proserpinacoides (^paise mermaid) 



ANACARDIACEAE (Sumac Family) 



Shrubs; juice resinous or milky. Leaves alternate, 3-foliolate 

 or odd-pinnate. Flowers mainly regular, perfect or polygamo- 

 dioecious. Calyx 3-7-cleft or -parted. Petals as many as the 

 sepals, or rarely none. Stamens 5. Ovary in tlie staminate 

 flowers 1 -celled; ovary in the pistillate flowers i -celled; styles 3; 

 cells i-ovuled. Fruit a small drupe. Only the following genus. 



RHUS (Sumac) 



Stipules none. Flowers in axillary or terminal clusters. — (Celtic rhudd 

 = red; hence Gk. rhus = these plants, on account of the red fruit.) 



A. Leaflets 11-31; fruit red, pubescent. E. R. glabra (smooth sumac) 



AA. Leaflets 3; fruit white or red, glabrous. 

 B. Plant with unpleasant odor; flowers in spikes or heads; fruit red. W. C. E. 



R. trilobata (skunk bush) 

 BB. Plant without unpleasant odor; flowers in panicles; fruit white, smooth or 

 striate. 

 C. Leaflets mostly subentire, the lateral ones petioled. E. — Poisonous to touch. 



R. tozjcodendron (poison ivy) 

 CC. Leaflets mostly crenate, the lateral ones sessile. W. — ■ Poisonous to touch. 



R. diversUoba (poison oak) 



CELASTRACEAE (Staff-tree Family) 



Shrubs.' Leaves simple; stipules none or small. Flowers 

 regular, small. Calyx 4-5-lobed or -parted, persistent. Petals 

 4-5. Stamens alternate with the petals. Ovary free or united 

 with the disk, 1-5-ceIled; styles short, thick; stigma entire or 2-5- 

 lobed; cells 2-4-ovuled. Fruit a capsule or follicle. 



A. Leaves opposite, ovate to lanceolate, serrulate; branches not spiny; stamens 



4 or 5. 

 B. Shrub i m. or less high; leaves evergreen, 1.2-2.5 cm. long; flower parts in 4's; 

 ovary 2-ceUed. W. C. E. — (Gk. pachis = thick; -|- stigma.) 



Pachistima myrsinites 



BB. Shrub 2-5 m. high; leaves deciduous, 5-10 cm. long; flower parts in 5's; 



ovary 3-s-celled. W. C. — (Gk. eu = good, onoma = name; applied in irony, 



.since it was thought to poison cattle.) Euonymus occidentalis (western wahoo) 



AA. Leaves alternate, deciduous, oblaneoiate, entire; branches spiny; stamens 10; 



flower parts in s's. E. — (Meaning undetermined.) Forsellesia spinescens 



