Bailey & Bailey: Woody Plants of National Parks 27 



Leaves more or less woolly or felty at least below. 



Flowers small, without corollas but the calyx yellow, white, 



or reddish; fruits small seed-like achenes ...- 



ERIOGONUM, p. 68. 



Flowers 1/3 to 5/8 inch long, blue to purple; fruits small 



capsules ERIODICTYON, p. 206. 



Leaves green, not at all woolly, sometimes hairy, small. 



Corollas broadly bell-shaped to urn-shaped, white or pink; 



fruits small capsules or berries ERICACEAE, p. 180. 



Corollas funnel-shaped, 1 to 2 inches long, pink; fruits long- 

 linear capsules 4 to 8 inches long CHILOPSIS, p. 213. 



Flowers borne in flower-like heads surrounded below by one or sev- 

 eral series of scale-iike bracts, with or without petal-like 



outer ray flowers CoMPOSlTAE, p. 228. 



b. Stems spiny or prickly or the branches spine-tipped. 



Shrubs or small trees with stout thorns borne along the stems; leaves coirsely and 

 irregularly toothed or somewhat lobed; fruits dark purple, apple-like 

 berries CRATAEGUS, p. 118. 



Shrubs often intricately branched with some of the branches spine-tipped; leaves 

 not toothed or finely toothed; fruits berries or capsules. 



Flowers tiny; petals 5 or none; fruits berry-like or dove-like capsules 



Rhamnaceae, p. 161. 



Flowers '/2 to Y^ i'^'^^' long- tubular; fruits juicy berries Solanaceae, p. 208. 



2. Leaves lobed or divided inio separate leaflets. 

 a. Shrubs spiny or prickly. 



Leaves large and coarse, often 12 inches across, palmately lobed; stems and leaf- 

 stalks densely prickly with stiff spines; flowers and fruits in erect clusters: 

 in northern parks OPLOPANAX, p. 174. 



Leaves j/2 to 4 inches across, lobed or divided into several leaflets. 



Fruits fleshy; flowers regular, not in heads. 



Flowers with calyx saucer-shaped to tubular, white to purplish, the petals 



tiny; stamens 5; fruits gooseberries or currants RIBES, p. 84. 



Flowers with herbaceous calyx, the petals mostly conspicuous; stamens 10 to 



numerous; fruits berries or apples RosACEAE, p. 98. 



Fruits dry pods or borne in bur-like heads; flowers pea-like or tiny and borne 

 in small heads or dense cylindrical spikes. 

 Mostly tall shrubs with thoins along the stems; flowers of one kind, pea- 

 like or borne in cylindrical spikes, pink or yellow; fruits pea-like 



pods - Leguminosae, p. 144. 



Low shrubs with some of the branches spine-tipped ; flowers in small heads 

 of two kinds; fruits tiny seed-like achenes borne in small bur-like 

 heads ■- franseria, p. 249. 



b. Shrubs not spiny nor prickly. 



Flowers borne separately, not in flower-like heads. 



Leaves pinnately lobed or divided into spine-toothed leaflets. 



Mostly tall shrubs; leaves lobed; flowers inconspicuous, the pollen-bearing 



borne in long slender catkins; fruits acorns QUERCUS, p. 62. 



Mostly low shrubs; leaves divided into spine-toothed leaflets; flowers 



yellow, all alike; fruits berries Berberidaceae, p. 70. 



