An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language . ation, provided the leaf underconsideration is not compound. We may conveniently arrange them in the following table: TABLE OF SIMPLE FEATHEB VEINED LEAF-FORMS A single principal vein traverses the main axis of the leaf The tissues intervening between the veinlets fully or mainly developed .... Feather Veined Forms. Pinnate-VeinedThe middle veinlot exceeds the others in length, the veinlets above and below becoming gra
An illustrated guide to the flowering plants of the middle Atlantic and New England states (excepting the grasses and sedges) the descriptive text written in familiar language . ation, provided the leaf underconsideration is not compound. We may conveniently arrange them in the following table: TABLE OF SIMPLE FEATHEB VEINED LEAF-FORMS A single principal vein traverses the main axis of the leaf The tissues intervening between the veinlets fully or mainly developed .... Feather Veined Forms. Pinnate-VeinedThe middle veinlot exceeds the others in length, the veinlets above and below becoming gradually shorter. The breadth of the widest i)art is: About equal to the length of the leaf (Fig. 1) . Orhicular About I to I the length (Fig. 2) Oval About i the length (Fig. 3) FUiptic About i to J the length (Fig. 4) Oblong The veinlets of the lower third exceed the otlier siile veinlets,which become gradually shorter above and below. The breadth of the widest part is: Nearly or quite equal to the length (Fig. (!) . DeltoidAbout § the length, egg-sliaped (Fig. 7) . . OvateAbout i the length or less, lance-shaped (Fig. 8) Lanceolate OUTLINE OF STRUCTURAL BOTANY 17. 18 OUTLINE OF STRUCTURAL BOTANY The side veinlets all very short (Fig. 5) Linear The veinlets of the upper third exceed the others, which becomegradually shorter above and widest part is: About i the length, jycar-shaped; inversely egg-shaped (Fig. 9) Obovatc About i the length, inversely lance-shaped (Fig. 10) Ohlanceolate About J that of the length or less spatula-formed (Fig, 11) ^pnluhtte The lower veinlets protrude notably outward beyond the gen-eral outline or conspicuously apex sharp, the two sides of the base rounded. Heart-shaped (Fig. 12) Cordate The apex sharp, the general shape triangular, the two pos-terior triangular lobes pointing backward, not outward. (Fig. 13) ^Sagittate General form triangular, but the lower part of the leaf sud-denly widening into two l
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1910
