Michigan Trees Part 13

You’re reading novel Michigan Trees Part 13 online at LightNovelFree.com. Please use the follow button to get notification about the latest chapter next time when you visit LightNovelFree.com. Use F11 button to read novel in full-screen(PC only). Drop by anytime you want to read free – fast – latest novel. It’s great if you could leave a comment, share your opinion about the new chapters, new novel with others on the internet. We’ll do our best to bring you the finest, latest novel everyday. Enjoy!

FLOWERS.--April-May, with the leaves; dioecious; borne in slender, p.u.b.escent catkins 1-3 inches long; calyx 0; corolla 0; scales blunt, somewhat p.u.b.escent; stamens usually 2; ovary abortive, with stigmas nearly sessile. Staminate trees rare.

FRUIT.--April-May; 1-celled, long-conical, short-stalked capsule, about 1/4 inch long, containing many minute seeds which are furnished with long, silky, white hairs.

WINTER-BUDS.--Terminal bud absent; lateral buds long-conical, pointed, glabrous, bright red-brown, about 1/4 inch long.

BARK.--Twigs p.u.b.escent, yellow-green, often reddish, becoming glabrous, l.u.s.trous, brown; thick, gray on the trunk, smooth in young trees, very rough, irregularly scaly-ridged in old trees.

WOOD.--Light, soft, tough, close-grained, red-brown, with thick, whitish sapwood.

NOTES.--A native of Europe and Asia, where it is a valuable timber tree.

Hardy throughout the state and of very rapid growth. Thrives in rich, damp soil. Easily grown from cuttings. The twigs are very brittle at the base and are easily broken by the wind, hence the name Brittle Willow.

[Ill.u.s.tration: +Weeping Willow. Napoleon's Willow+

1. Winter twig, 1.

2. Portion of twig, enlarged.

3. Leaf, 1.

4. Pistillate flowering branchlet, 1/2.

5. Pistillate flower, enlarged.

6. Fruiting branchlet, 1/2.]

+SALICACEAE+

+Weeping Willow. Napoleon's Willow+

_Salix babylonica L._

HABIT.--A tree 40-50 feet high, with a short, stout trunk 3-4 feet in diameter; the long, slender branchlets, often many feet in length, droop in graceful festoons, giving to the tree a weeping habit.

LEAVES.--Alternate, simple, 3-7 inches long, 1/4-1/2 inch broad; linear to linear-lanceolate, long-pointed; finely sharp-serrate; thin and firm; glabrous, dark green above, paler beneath; petioles 1/2 inch or less in length, glandular above, often hairy.

FLOWERS.--April-May, with the leaves; dioecious; borne in slender, nearly glabrous catkins 1-2 inches long; calyx 0; corolla 0; scales ovate-lanceolate, slightly hairy; ovary ovoid-conical, very short-stalked, with stigmas longer than the style. Staminate trees apparently do not occur in the United States.

FRUIT.--May-June; 1-celled, narrow-ovoid, sessile capsule, about 3/16 inch long, containing many minute seeds which are furnished with long, silky, white hairs.

WINTER-BUDS.--Terminal bud absent; lateral buds narrow-conical, sharp-pointed, somewhat flattened, brownish, 1/8-1/4 inch long.

BARK.--Twigs glabrous, olive-green; thick and gray on old trunks, rather smooth, or irregularly fissured into shallow, firm ridges.

WOOD.--Light, soft, weak, close-grained, light brown, with thick, whitish sapwood.

NOTES.--A native of Europe and Asia. Often grown in cemeteries. Easily propagated by cuttings. Rapid of growth in rich, damp soil. Sometimes winter-killed because the wood is not ripened.

SUMMER KEY TO THE SPECIES OF POPULUS

a. Leaf-petioles essentially terete.

b. Petioles and lower sides of leaves p.u.b.escent; leaves heart-shaped. _P. candicans_, p. 55.

bb. Petioles and lower sides of leaves glabrous; leaves ovate-lanceolate. _P. balsamifera_, p. 53.

aa. Leaf-petioles strongly flattened.

b. Petioles and lower sides of leaves tomentose; twigs p.u.b.escent. _P. alba_, p. 47.

bb. Petioles and lower sides of leaves glabrous; twigs glabrous.

c. Leaves distinctly deltoid in shape.

d. Leaves broader than they are long, abruptly ac.u.minate at the apex; marginal teeth not conspicuously incurved; branches erect and more or less appressed to the main stem, forming a narrow, spire-like crown. _P. nigra italica_, p. 59.

dd. Leaves longer than they are broad, more or less taper-pointed at the apex; marginal teeth rather conspicuously incurved; branches spreading, forming a broad crown. _P.

deltoides_, p. 57.

cc. Leaves ovate to nearly orbicular in shape.

d. Margin of leaves coa.r.s.ely sinuate-toothed; leaves 3-5 inches long. _P. grandidentata_, p. 51.

dd. Margin of leaves finely serrate; leaves less than 3 inches long. _P. tremuloides_, p. 49.

+WINTER KEY TO THE SPECIES OF POPULUS+

a. Branches erect, more or less appressed to the main stem, forming a narrow, spire-like crown. _P. nigra italica_, p. 59.

aa. Branches spreading, forming a broad crown.

b. Terminal buds 1/8-1/4 inch long, not resinous.

c. Buds and twigs more or less conspicuously white-downy; twigs green. _P. alba_, p. 47.

cc. Buds and twigs not conspicuously white-downy; twigs usually red-brown.

d. Terminal buds about 1/8 inch long, p.u.b.erulous, dusty-looking; lateral buds widely divergent; twigs rather coa.r.s.e. _P. grandidentata_, p. 51.

dd. Terminal buds about 1/4 inch long, glabrous, l.u.s.trous; lateral buds more or less appressed; twigs rather slender. _P.

tremuloides_, p. 49.

bb. Terminal buds 1/2-1 inch long, sticky-resinous.

c. Terminal buds about 1/2 inch long; buds not fragrant; twigs usually yellow, more or less strongly angled. _P. deltoides_, p. 57.

cc. Terminal buds nearly 1 inch long; buds fragrant; twigs usually red-brown and seldom strongly angled. _P.

balsamifera_[E] p. 53. _P. candicans_[E] p. 55.

Michigan Trees Part 13

You're reading novel Michigan Trees Part 13 online at LightNovelFree.com. You can use the follow function to bookmark your favorite novel ( Only for registered users ). If you find any errors ( broken links, can't load photos, etc.. ), Please let us know so we can fix it as soon as possible. And when you start a conversation or debate about a certain topic with other people, please do not offend them just because you don't like their opinions.


Michigan Trees Part 13 summary

You're reading Michigan Trees Part 13. This novel has been translated by Updating. Author: Charles Herbert Otis already has 728 views.

It's great if you read and follow any novel on our website. We promise you that we'll bring you the latest, hottest novel everyday and FREE.

LightNovelFree.com is a most smartest website for reading novel online, it can automatic resize images to fit your pc screen, even on your mobile. Experience now by using your smartphone and access to LightNovelFree.com

RECENTLY UPDATED NOVEL