Alder
Habit | tree
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Lifespan: | ⌛ | perennial |
Features: | ✓ | deciduous |
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Alnus > |
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Lifespan: | ⌛ | perennial |
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Origin: | ✈ | ? |
Exposure: | ☼ | ?"?" is not in the list (sun, part-sun, shade, unknown) of allowed values for the "Exposure" property. |
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Water: | ◍ | ?"?" is not in the list (wet, moist, moderate, dry, less when dormant) of allowed values for the "Water" property. |
Alnus > |
ExpandRead about Alder in the Standard Cyclopedia of Horticulture
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Cultivation
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Propagation
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Pests and diseases
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Species
Classification according to Wikipediawp: The genus is divided into three subgenera:
Subgenus Alnus. Trees. Shoot buds stalked. Male and female catkins produced in autumn (fall) but staying closed over winter, pollinating in late winter or early spring. About 15-25 species, including:
- Alnus acuminata - Andean Alder. Andes Mountains, South America.
- Alnus cordata - Italian Alder. Italy.
- Alnus cremastogyne
- Alnus glutinosa - Black Alder. Europe.
- Alnus incana - Grey Alder. Europe & Asia.
- Alnus oblongifolia (A. incana subsp. oblongifolia) - Arizona Alder. Southwestern North America.
- Alnus rugosa (A. incana subsp. rugosa) - Speckled Alder. Northeastern North America.
- Alnus tenuifolia (A. incana subsp. tenuifolia) - Thinleaf Alder or Mountain Alder. Northwestern North America.
- Alnus japonica - Japanese Alder. Japan.
- Alnus jorullensis - Mexican Alder. Mexico, Guatemala.
- Alnus nepalensis - Nepalese Alder. Eastern Himalaya, southwest China.
- Alnus orientalis - Oriental Alder. Southern Turkey, northwest Syria, Cyprus.
- Alnus rhombifolia - White Alder. Interior western North America.
- Alnus rubra - Red Alder. West coastal North America.
- Alnus serrulata - Hazel alder, Tag Alder or Smooth alder. Eastern North America.
- Alnus subcordata - Caucasian Alder. Caucasus, Iran.
Subgenus Clethropsis. Trees or shrubs. Shoot buds stalked. Male and female catkins produced in autumn (fall) and expanding and pollinating then. Three species:
- Alnus formosana -Formosan Alder Taiwan
- Alnus maritima - Seaside Alder. East coastal North America, plus disjunct population in Oklahoma.
- Alnus nitida - Himalayan Alder. Western Himalaya.
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Subgenus Alnobetula. Shrubs. Shoot buds not stalked. Male and female catkins produced in late spring (after leaves appear) and expanding and pollinating then. One to four species:
- Alnus viridis - Green Alder. Widespread:
- Alnus viridis subsp. viridis. Eurasia.
- Alnus viridis subsp. maximowiczii (A. maximowiczii). Japan.
- Alnus viridis subsp. crispa (A. crispa). Northern North America.
- Alnus viridis subsp. sinuata (A. sinuata, Sitka Alder or Slide Alder). Western North America, far northeastern Siberia.
SCH ListCH:
- A . acuminata, HBK. Tree: lvs. usually ovate and pubescent beneath, doubly serrate. Cent. Amer., north to Ariz. CH
- A. cremastogyne, Burkill. Tree: young branchlets glabrous; lvs. oblong-obovate, glabrous, sharply serrate, 3-4 in. long: cones cylindric, solitary on slender peduncles, about 1 1/2 in. long. W.China. — Recently intro., probably not hardy N. CH
- A. firma, Sieb. & Zucc. (A. Sieboldiana, Mats.). Allied to A. yasha. Tree: lvs. ovate, or ovate-oblong, acute, rounded at the base, with 10-15 pairs of veins, 3-5 in. long: cones about 1 in. long, solitary on a peduncle 1/2-1 in. long. Japan. S.I.F. 2:12. CH
- A. fruticosa, Rupr. (A. viridis var. sibirica, Regel). Allied to A. viridis. Shrub: lvs. broadly ovate or elliptic-ovate, usually rounded at the base, nearly doubly or sinuately serrate. Siberia, Corea. CH
- A. hirsuta. Turcs. (A. incana var. hirsuta, Spach). Allied to A. tinctoria. Tree; young branchlets, and petioles tomentose: lvs. suborbicular to elliptic, acutish, denticulate and slightly lobed, ferrugineously tomentose beneath. Japan, Manchuria. CH
- A. jorullensis, HBK. Allied to A. acuminata. Lvs. oblong-lanceolate, coarsely dentate. Cent. Amer.CH
- A. mollis, Fernald. Closely allied to A. crispa. Shrub or small tree: branchleta pubescent: lvs. pubescent beneath. 2—4 in. long. N.E. Amer., west to Lake Winnipeg, south to Mass.CH
- A. nitida, Endl. Tree, to 100 ft.: lvs. ovate to ovate-oblong, short-acuminate, not plicate, 3-4 in. long, entire or remotely serrulate, bright green and lustrous above, glabrous: male catkins very slender, to 6 in. long: cones 2-4, peduncled. Himalayas. B.M. 7654.CH
- A. oblongifiolia, Torr. Tree, 20-30 ft.: lvs. oblong-ovate, cuneate, doubly serrate, 2-3 in. long: strobiles 1/2-1 in. long, peduncled. N. Mer. and Aris. S.8. 9:457.CH
- A. occidentalis, Dipp.==A. tenuifolia.CH
- A. orientalis, Decne. (A. barbata, Hort., not C. A. Mey. A. firma, Hort., not Sieb. & Zucc. A. macrophylla, Hort.). Allied to A. cordata. Tree: lvs. ovate-oblong, obtusely or crenately serrate, 2-5 in. long, glabrous, with 8-10 pairs of veins: cones ovoid, glutinous, 1/2-1 in. long; nutlets without wing. Asia Minor.CH
- A. pubescent, Tsch. (A. glutinosa X incana). Lvs. roundish-ovate or obovate, irregularly serrate, pubescent beneath. Natural hybrid.CH
- A. rhombifolia, Nutt. Tree, 60-80 ft.: lvs. cuneate, oval or ovate, 2-3 1/2 in. long, finely serrate, yellowish green and puberulous beneath: strobiles oblong, peduncled. W.N. Amer. S.S. 1):450.CH
- A. Sieboldiana, Mats.==A. firma.CH
- A. sinuata, Rydb. (A. sitchensis, Sarg.). Allied to A. viridis. Shrub, 3-16 ft.: lvs. slightly lobed, serrulate, glabrous, thin. W. N. Amer. 8.8.14:727.CH
- A . Spaethii, Callier (A. japonica X subcordata). Tree: lvs. ovate-lanceolate, sharply serrate, violet-purple when unfolding. Of garden origin.CH
- A. subcordata, C. A. Mey. Tree, 30-50 ft.: lvs. ovate or oblong- ovate, rounded at the base, 2-6 in.-long, crenately or doubly serrate, glabrous or sometimes pubescent beneath: cones about 1 in. long: nutlets with a narrow wing. Caucasus.CH
- A. tenuifolia, Nutt. (A. incana var. virescens, Wats. A. occidentalis, Dipp.). Small tree, occasionally 30 ft.: lvs. ovate, 2-4 in. long, slightly lobed and double serrate, green and nearly glabrous beneath. W. N. Amer.CH
- Alnus AlnobetulaCH
- Alnus aureaCH
- Alnus barbataCH
- Alnus communisCH
- Alnus cordataCH
- Alnus cordifoliaCH
- Alnus denticulataCH
- Alnus firmaCH
- Alnus glaucaCH
- Alnus glutinosaCH
- Alnus imperialiaCH
- Alnus incanaCH
- Alnus incisaCH
- Alnus japonicaCH
- Alnus laciniataCH
- Alnus maritimaCH
- Alnus MitchellianaCH
- Alnus oblongataCH
- Alnus oreganaCH
- Alnus oxyacanthifoliaCH
- Alnus pendulaCH
- Alnus pinnatififaCH
- Alnus pyrifoliaCH
- Alnus rotundifoliaCH
- Alnus rubraCH
- Alnus rubrinerviaCH
- Alnus rugosaCH
- Alnus serrulataCH
- Alnus tiliaceaCH
- Alnus tiliaerfoliaCH
- Alnus tinctoriaCH
- Alnus undulataCH
- Alnus viridisCH
- Alnus vulgarisCH
- Alnus yashaCH
Gallery
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References
- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963
External links
- w:Alder. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
- Alder QR Code (Size 50, 100, 200, 500)