قراءة كتاب Manual of the Trees of North America (Exclusive of Mexico) 2nd ed.
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Manual of the Trees of North America (Exclusive of Mexico) 2nd ed.
الصفحة رقم: 4
- Internodes distinctly longer than broad; branchlets flattened, of nearly equal color on both sides; leaves eglandular.
- Libocedrus (p. 65).
- Internodes about as long as broad, often pale below, usually glandular.
- Branchlets flattened.
- Branchlets in one plane, much flattened, 1/12′—⅙′ broad.
- Thuya (p. 67).
- Branchlets slightly flattened, 1/24′—1/16′ broad.
- Chamæcyparis (p. 75).
- Branchlets terete or 4-angled.
- Branchlets more or less in one plane; fruit a cone.
- Cupressus (p. 69).
- Branchlets not in one plane; fruit a berry (leaves needle-shaped, in whorls of 3 in No. 1).
- Juniperus (p. 78).
- 2. Leaves Deciduous.
- Leaves in many-leafed clusters on short lateral spurs.
- Larix (p. 31).
- Leaves spreading in 2 ranks.
- Taxodium (p. 63).
- III. Leaves netted-veined, rarely scale-like or wanting. Dicotyledons.
- A. LEAVES OPPOSITE. (B, see p. xix).
- 1. Leaves Simple. (2, see p. xviii).
- Leaves persistent.
- a Leaves with stipules.
- b Leaves entire or occasionally slightly crenate or serrate.
- c Leaves emarginate at apex, very short-stalked, 1½′—2′ long.
- Leaves obovate, gradually narrowed into the petiole.
- Gyminda (p. 678).
- Leaves oval to oblong, rounded or broad-cuneate (rarely alternate).
- Branchlets densely velutinous.
- Krugiodendron (p. 721).
- Branchlets slightly puberulous at first, soon glabrous.
- Reynosia (p. 720).
- cc Leaves not emarginate at apex.
- Leaves obtuse, rarely acutish or abruptly short-pointed.
- Leaves elliptic, 3½′—5′ long.
- Rhizophora (p. 763).
- Leaves obovate, usually rounded at apex, ¾′—2′ long.
- Byrsonima (p. 632).
- Leaves acute to acuminate.
- Leaves oblong-ovate to lanceolate; branchlets glabrous.
- Exostema (p. 877).
- Leaves broad-elliptic to oblong-elliptic; branchlets villose.
- Guettarda (p. 879).
- bb Leaves serrate (often pinnate).
- Lyonothamnus (p. 378).
- aa Leaves without stipules.
- Petioles biglandular; leaves obtuse or emarginate, 1½′—2½′ long.
- Laguncularia (p. 767).
- Petioles without glands.
- Leaves furnished below with small dark glands, slightly aromatic; petioles short.
- Leaves oblong to oblong-ovate and acuminate or elliptic and bluntly short-pointed.
- Calyptranthes (p. 769).
- Leaves ovate, obovate or elliptic.
- Eugenia (p. 770).
- Leaves without glands.
- Leaves green and glabrous below.
- Leaves obtuse or emarginate at apex (rarely alternate), 1′—1½′ long.
- Torrubia (p. 341).
- Leaves acute, acuminate, or sometimes rounded or emarginate, 3′—5′ long.
- Leaves distinctly veined.
- Citharexylon (p. 864).
- Leaves obscurely veined.
- Osmanthus (p. 856).
- Leaves hoary tomentulose or scurfy below.
- Leaves strongly 3-nerved, acuminate, densely scurfy below.
- Tetrazygia (p. 776).
- Leaves penniveined, rounded or acute at apex, hoary tomentulose below.
- Avicennia (p. 865).
- ** Leaves deciduous.
- a Leaves without lobes.
- b Leaves serrate.
- Winter-buds with several opposite outer scales.
- Leaves puberulous below, closely and finely serrate; axillary buds solitary.
- Evonymus (p. 675).
- Leaves glabrous below, remotely crenate-serrulate; axillary buds several, superposed.
- Forestiera (p. 853).
- Winter-buds enclosed in 2 large opposite scales.
- Viburnum (p. 886).
- bb Leaves entire.
- c Leaves without stipules.
- Leaves suborbicular or elliptic to oblong.
- Leaves rounded or acutish at apex, 1′—2′ long, occasionally 3-foliolate, glabrous; branchlets quadrangular.
- Fraxinus anomala (p. 837).
- Leaves acuminate or acute at apex, 3′—4′ long.
- Leaf-scars connected by a transverse line, with 3 bundle-traces; branchlets slender, appressed-pubescent.
- Cornus (p. 785).
- Leaf-scars not connected, with 1 bundle-trace; branchlets stout, villose, puberulous or glabrous.
- Chionanthus (p. 855).
- Leaves broad-ovate, cordate, acuminate, 5′—12′ long, on long petioles.
- Catalpa (p. 870).
- Leaves linear to linear-lanceolate, short-stalked or sessile (sometimes alternate).
- Chilopsis (p. 869).
- cc Leaves with persistent stipules, entire.
- Leaves oval or ovate; winter-buds resinous, the terminal up to ½′ in length.
- Pinckneya (p. 876).
- Leaves ovate to lanceolate; winter-buds minute.
- Cephalanthus (p. 878).
- aa Leaves palmately lobed.
- Acer (p. 681).
- 2. Leaves Compound.
- a Leaves persistent, with stipules.
- Leaves equally pinnate; leaflets entire.
- Guaiacum (p. 630).
- Leaves unequally pinnately parted into 3—8 linear-lanceolate segments (sometimes entire).
- Lyonothamnus (p. 378).
- Leaves trifoliate.
- Leaflets stalked.
- Amyris (p. 640).
- Leaflets sessile.
- Helietta (p. 637).
- aa Leaves deciduous.
- Leaves unequally pinnate or trifoliate.
- Leaflets crenate-serrate or entire, the veins arching within the margins; stipules wanting; winter-buds with several opposite scales.
- Fraxinus (p. 833).
- Leaflets sharply or incisely serrate, the primary veins extending to the teeth.
- Leaflets 3—7, incisely serrate; stipules present; winter-buds with 1 pair of obtuse outer scales.
- Acer Negundo (p. 699).
- Leaflets 5—9, sharply serrate; stipules present; winter-buds with many opposite acute scales; pith thick.
- Sambucus (p. 882).
- Leaves digitate, with 5—7, sharply serrate leaflets; terminal buds large.
- Æsculus (p. 702).
- B. LEAVES ALTERNATE.
- 1. Leaves Simple. (2, see p. xxiv).
- * Leaves persistent. (** see p. xxii).
- a Leaves deeply 3—5-lobed, ⅓′—½′ long, with linear lobes, hoary tomentose below.
- Cowania (p. 549).
- aa Leaves palmately lobed.
- Leaves stellate-pubescent, about 1½′ in