. The Botanical Class-Book and Flora of Pennsylvania. 40 Radiate veined Compound When a radiate veined leaf becomes compound, theleaflets are necessarily all attached to the apex of the commonpetiole, forming a ternate or palmately trifoliate leaf, as inClover, (Fig. 54,) or a digitate leaf, as in the Horse chestnut,(Fig. 44). 1. Biternate, (twice ternate, Fig. 55,) when the leafletsof a ternate leaf become themselves ternate. Ex.: Squirrelcorn (Dicentra Canadensis.) 2. Triternate, (three times three ternate, Fig, 56,)when the leaflets of a biternate leaf become again :

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. The Botanical Class-Book and Flora of Pennsylvania. 40 Radiate veined Compound When a radiate veined leaf becomes compound, theleaflets are necessarily all attached to the apex of the commonpetiole, forming a ternate or palmately trifoliate leaf, as inClover, (Fig. 54,) or a digitate leaf, as in the Horse chestnut,(Fig. 44). 1. Biternate, (twice ternate, Fig. 55,) when the leafletsof a ternate leaf become themselves ternate. Ex.: Squirrelcorn (Dicentra Canadensis.) 2. Triternate, (three times three ternate, Fig, 56,)when the leaflets of a biternate leaf become again : Columbine (Aquilegia Canadensis.) 3. Digitate leaves, of five, seven, or any definite numberof leaflets, are termed Quinate, Septinate, &c. ; or digitatelyfive foliate, seven foliate, &c. By this nomendature, the dis-tinction between pinnate and digitate leaves is readily under-stood,

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