Betulaceae

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Betulaceae

[‚bech·ə′lās·ē‚ē]
(botany)
A small family of dicotyledonous plants in the order Fagales characterized by stipulate leaves, seeds without endosperm, and by being monoecious with female flowers mostly in catkins.
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white birch

white birch

Trees have paper-like bark. Snapped twigs have wintergreen aroma. Bark and twig tea used for lung problems, sore muscles, joint pain, skin fungus, cracked heels, bladder and urinary issues, stomach aches, laxative, diuretic, colds, fever, rheumatism, diarrhea, tumors, cancer, anti-viral, anti-inflammatory, skin cancer. Birch tea has been historically used in enemas. Worm-like flowers (catkins) also edible.

Betulaceae

 

a family of monoecious, dicotyledonous plants.

Betulaceae are trees or shrubs with alternate leaves and early falling stipules. The flowers are small, plain, unisexual, anemophilous, and gathered into compound, catkin-like inflorescences consisting of extremely vestigial dichasia (two or three flowered). The staminal (male) catkins are pendulous, long, and cylindrical; the pistillate (female) ones are more or less upright, shorter than the staminal ones, and cylindrical or oval. The ovary is on top. The fruit is nutlike, winged, or wingless. There are two genera of Betulaceae: Betula (birch) and Alnus (alder). The number of species is very approximate (because of highly developed hybridization of the birch) but is close to 200. Betulaceae are distributed chiefly in the nontropical regions of the northern hemisphere, but they are also found in southern Asia and in America as far south as Chile and Argentina. Both the birch and the alder are important timber-forming species. Sometimes the hazels are included in the Betulaceae family as a special subfamily.

REFERENCES

Flora SSSR, vol. 5. Moscow-Leningrad, 1936.
Winkler, H. “Betulaceae.” In Das Pflanzenreich, fasc. 19. Leipzig, 1904.

M. E. KIRPICHNIKOV

References in periodicals archive ?
The birch variables were analyzed by ANOVA (GLM procedure of SAS with Type III sums of squares; SAS Institute 1990), including birch family as a random effect and fertilization - shade treatment and previous-year defoliation (to trigger DIR) as fixed effects.
For the growth variables, birch family did not interact with fertilization - shade treatments or defoliation, nor did birch family modify their interactions (i.
For all variables of leaf chemistry except P, birch family had a significant effect (Table 2).
Through them their share descended with the manor of Handsworth to the Birch family.
For the past three summers Glaser has volunteered at the Birch Family Camp (Putnam Valley, NY) as a counselor for three- to six-year-olds.