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Athyrium vidalii (Fr. & Sav.) Nakai

山蹄蓋蕨

Athyrium vidalii

Credit: Liu, Yea-chen

Rhizome erect, stout, covered with persistent stipe bases; scales m\narrowly lanceolate, attenuate, brown to pale brown, stipes stramineous, 8-25 cm long, scaly at base. Lamina deltoid, 18-35 cm long by 14-25 cm wide, bipinnate, pinnae 7-15 cm long, ascending, subsessile or with very short petioles; pinnules usually sessile, or adnate on small fronds, serrulate or denticulate; upper surface with spines along margins of rachilla and costa grooves; basal pinna usually shortened and broader than those above it, basal pinnules of lowest pinna much shortened. Sori oblong, medial, 1-2 mm long; indusia straight or curved and crossing a veinlet.

Korea, Japan, China and Taiwan.

Habitat: Open, un-shaded, Ridge, Edge of forest or side by the trail, Understory of Forest, Valley or near stream

Leaf shape: Deltoid

Apex of Leaf: Abrupt

Leaf Division: Bipinnate

Length of Stipe: 20 (15-25)

Length of Lamina: 35 (25-60)

Width of Lamina: 25 (15-50)

Stipe Color: Purple, Purple to Stramineous, Stramineous, Green

Free Pinnulate in basal Pinnae: Yes

Form of basal Pinnulate arrangement: Opposite

Apex of Pinnae: Acuminate

Petioled in pinnae: Short Petiole (less than 3 mm)

Length of Lowest Pinnae: 15 (10-30)

Wideth of Lowest Pinnae: 7 (5-10)

Lowest pinnae with enlarged basiscopic pinnules (more than 3 mm): No, less than 3 mm

Apex of terminal fragment: Acute

Margin of terminal fragment: Crenate

Type of Basal of Pinnule: Constricted, Petiolulate

Anterior pinna or pinnule auriculate: not auricaulate

Lowest Pinnae with shorter basal pinnule: No, basal pinnule similar with next two pinnules

Second Lowest Pinnae with shorter basal pinnule: No, Basal Pinnulate similar with next two

Abaxial Surface of Rachis with Unicellular Hairs ?: No, glabrous

Abaxial Surface of Rachis with Gland Hairs?: No, there is no gland hairs on it

Abaxial Surface of Coaste with Unicellular Hairs ?: No, there is no unicellular hairs on costae (glabrous)

Type of Adaxial Costae Spines: Short spines

Spines Existing on Adaxial Costulate: Yes, spines Existing on costulate

Type of Scales on Basal Stipe: Lanceolate

Color of Scales on Basal Stipe: Yellow Brown

With Adventitious Bud near the Apex of Leave: No, adventitious buds absent

Sori Shape: Short straight, Curved, Reniform

Sori Position: Middle of veinlet

Type of Rhizome: Short Erect

Geographic Distribution: East Asia

Altitude: 2500 (1500-3000)


 

Related Objects  
  • Web Page
  • Web Page
  • Image/JPEG (Liu, Yea-chen)
  • Image/JPEG

    Flora of China  
  • Illustration
  • Illustration

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