62 Spring Flora of Ohio. 



A-run'-cus a-run'-cus (L.) Karst. {Spircra aruncus L.) Goat's^ 

 Beard. — A smooth, tall, perennial herb. 



4. Genus PY'-RUS. — Trees or shrubs, with flowers in corymbed 

 cymes, large, fragrant, rose color in the native species ; pome globular. 

 Besides the species named below the genus also includes the cultivated 

 Apple (Pyrus nialus I/.) and the Pear [Pyriis conuiiiinisY,.) 



Py'-rus cor-o-na'-ri-a L. Crab-Apple. — Leaves ovate, often sub-cor- 

 date, cut-serrate or lobed, soon glabrous; styles luiited at base. 



Py'-rus an-gus-ti-fo'-li-a Ait. Crab-Apple. — Resembling the last, but 

 / the leaves oblong or lanceolate, often acute at base, mostly toothed, 

 glabrous; styles distinct; blooming earlier. {XA^y*" » /^ 



5. Genus SOR'-BUS. — Trees or tall shrubs with flowers in com- 

 pound cymes; styles separate, pome berry-like, small; leaves pinnate, 

 leaflets rather numerous. 



Sor'-bus sam-bu-ci-fo'-li-a (C. & S.) Roem. (Pyrus sanibucifolia Ch. 

 & Schl.) Mountain Ash. — Leaflets oblong, oval or lanceolate ; berries 4 

 lines broad. 



0. Genus A-RO'-NI-A. — Shrub, leaves simple, the midrib glandular 

 along the upper side; cymes compound, fruit berry-like, small. 



A-ro'-ni-a ar-bu-ti-fo'-li-a (L.) Ell. {Pyrus arbittifolia L. f) Choke- 

 berry. — Leaves oblong or oblanceolate, finely glanditlar-serrate, to- 

 mentose beneath ; cyme tomentose ; fruit small, red or purple. Swamps 

 and damp thickets. 



A-ro'-ni-a ni'-gra (Willd.) Britt. {Pyriis arhutifolia var. melanocarpa 

 Hk.) Chokeberry. — Differs from the preceding in being nearly smooth 

 throughout; with larger black fruit. 



7. Genus AM-E-LAN'-CHI-ER. — Calyx-lobes downy within, petals 

 oblong, elongated; the pome berry -like, 10-celled; small trees with 

 sharply serrate leaves and white racemose flowers. 



Am-e-lan'-chi-er can-a-den'-sis (L.) Medic. Shad-bush; Service-berry; 

 June-berry. — Tree 10-.30 ft. high; leaves ovate to ovate-oblong, mostly 

 sub-cordate at base, 1-3 j'^ in. long; flowers in drooping racemes, petals 

 6-8 lines long. 



