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Comprehensive Description ( англиски )

добавил North American Flora
Tauschia howellii (Coult. & Rose) F. Macbr. Contr
Gray Herb. 56: 32. 1918.
Velaea Howellii Coult. & Rose, Rev. N. Am. Umbell. 122. 1888.
Drudeo phylum Howellii Coult. & Rose, Contr. U. S. Nat. Herb. 7: 82. 1900.
Short-caulescent, 5-8 cm. high, glabrous throughout; leaves ovate in general outline, excluding the petioles 1.5-3 cm. long, 1.5-3 cm. broad, pinnate or ternate, the leaflets oblong to ovate, confluent, sessile, 5-15 mm. long, 10-15 mm. broad, irregularly pungent-dentate and lobed, thick, the margins revolute; petioles 2-3 cm. long; peduncles up to 2 cm. long; involucre wanting; involucel of several bractlets like the foliage leaves, 1-2 cm. long, greatly exceeding the flowers and fruit; rays 3-5, 8-16 mm. long, or some umbellets sessile; pedicels up to 5 mm. long; calyx-teeth prominent; flowers yellow; styles slender, spreading; carpophore unknown; fruit oblong, 2-4 mm. long, 1-2 mm. broad, the ribs filiform; oil-tubes several in the intervals and on the commissure; seed-face unknown, but presumably concave to sulcate.
Type locality: "Top of Siskiyou Mountains," Jackson County, Oregon, Thomas Howell 711. Distribution: Known only from the vicinity of the type locality {Howell 1366).
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библиографски навод
Albert Charles Smith, Mildred Esther Mathias, Lincoln Constance, Harold William Rickett. 1944-1945. UMBELLALES and CORNALES. North American flora. vol 28B. New York Botanical Garden, New York, NY
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North American Flora

Tauschia howellii ( англиски )

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Tauschia howellii is a rare species of flowering plant in the carrot family known by the common names Howell's umbrellawort[2] and Howell's tauschia. It is endemic to the Klamath Mountains of far southern Oregon and far northern California, where it is limited to nine occurrences in the Siskiyou Mountains.[3] It grows in mountain forests on gravelly granite soils, often among stands of Shasta red fir (Abies magnifica var. shastensis). Despite its rarity it is stable and not considered very endangered.[3] It is a perennial herb growing 30 to 80 centimeters tall. It is hairless in texture. The thick leaves have blades which are divided into leaflets large, sharp teeth and edges curved up, and borne on long petioles. The short inflorescence is a compound umbel of yellow flowers on a few short rays. The fruit is oblong, ribbed, and just a few millimeters long.

References

  1. ^ "NatureServe Explorer 2.0".
  2. ^ USDA, NRCS (n.d.). "Tauschia howellii". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 8 December 2015.
  3. ^ a b The Nature Conservancy

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wikipedia EN

Tauschia howellii: Brief Summary ( англиски )

добавил wikipedia EN

Tauschia howellii is a rare species of flowering plant in the carrot family known by the common names Howell's umbrellawort and Howell's tauschia. It is endemic to the Klamath Mountains of far southern Oregon and far northern California, where it is limited to nine occurrences in the Siskiyou Mountains. It grows in mountain forests on gravelly granite soils, often among stands of Shasta red fir (Abies magnifica var. shastensis). Despite its rarity it is stable and not considered very endangered. It is a perennial herb growing 30 to 80 centimeters tall. It is hairless in texture. The thick leaves have blades which are divided into leaflets large, sharp teeth and edges curved up, and borne on long petioles. The short inflorescence is a compound umbel of yellow flowers on a few short rays. The fruit is oblong, ribbed, and just a few millimeters long.

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Tauschia howellii ( виетнамски )

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Tauschia howellii là một loài thực vật có hoa trong họ Hoa tán. Loài này được (J.M. Coult. & Rose) J.F. Macbr. miêu tả khoa học đầu tiên năm 1918.[1]

Chú thích

  1. ^ The Plant List (2010). Tauschia howellii. Truy cập ngày 10 tháng 6 năm 2013.

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Tauschia howellii: Brief Summary ( виетнамски )

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Tauschia howellii là một loài thực vật có hoa trong họ Hoa tán. Loài này được (J.M. Coult. & Rose) J.F. Macbr. miêu tả khoa học đầu tiên năm 1918.

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