Hiya H.Shang
Descripción
Diagnosis: Hiya is most similar to Hypolepis but differs by scrambling and indeterminate and intermittent growth of fronds, stipule-like pinnules at the base of pinnae, and rachis-costa architecture where the adaxial sulcus of the rachis is continuous with that of the costae and costules.
Etymology: the genus is derived from the name given to imperial guards from the Qing dynasty of China, hiya, referring to the prickly (H. brooksiae and H. nigrescens) or very rough (H. scabristipes) armed stipes. Gender: Since the three specific epithets currently ascribed to Hiya are not gender informative, we describe Hiya as a feminine genus with “-a” end.
Rhizome long-creeping, 3–5 mm diam, provided with castaneous multicellular bristles. Leaves indeterminate, scandent, to 10 m long, displaying rhythmic growth; petioles 1–2.5 m × 3–8 mm, dark-brown to black proximally, lighter-brown above, adaxially grooved, with sparse catenate-acicular hairs and laterally appressed trichomidia, rugose due to detached hairs, armed, the aculeae curved, blackish at the tips, solid, to 1.5 mm long, or conical, blackish, hollow, commonly caduceus; the petiole bases provided with proliferous sylleptic buds which develop new rhizomes; laminae 4–5-pinnate proximally, 2–7 × 0.8–2.5 m, the apex constantly maintaining an uncoiling crozier; rachises straight, stramineous to light brown, rugose, armed, with sparse hairs and trichomidia; pinnae ovate or narrowly ovate; basal pinnae 40–120 × 40–60 cm, subequilateral; first acroscopic pinnules and first secondary pinnules stunted, commonly protecting pinna or pinnule departures, especially in the lamina apices (these often referred to as stipule-like pinnules); costae abaxially and adaxially with hairs and trichomidia, adaxially the sulcus confluent with those of the costules; costules and veins abaxially and adaxially with hairs and trichomidia, or glabrous; sori marginal, provided with a true adaxial indusium, the indusium reflexed over the sori or plane; spores monolete.
A
Etymology: the genus is derived from the name given to imperial guards from the Qing dynasty of China, hiya, referring to the prickly (H. brooksiae and H. nigrescens) or very rough (H. scabristipes) armed stipes. Gender: Since the three specific epithets currently ascribed to Hiya are not gender informative, we describe Hiya as a feminine genus with “-a” end.
Rhizome long-creeping, 3–5 mm diam, provided with castaneous multicellular bristles. Leaves indeterminate, scandent, to 10 m long, displaying rhythmic growth; petioles 1–2.5 m × 3–8 mm, dark-brown to black proximally, lighter-brown above, adaxially grooved, with sparse catenate-acicular hairs and laterally appressed trichomidia, rugose due to detached hairs, armed, the aculeae curved, blackish at the tips, solid, to 1.5 mm long, or conical, blackish, hollow, commonly caduceus; the petiole bases provided with proliferous sylleptic buds which develop new rhizomes; laminae 4–5-pinnate proximally, 2–7 × 0.8–2.5 m, the apex constantly maintaining an uncoiling crozier; rachises straight, stramineous to light brown, rugose, armed, with sparse hairs and trichomidia; pinnae ovate or narrowly ovate; basal pinnae 40–120 × 40–60 cm, subequilateral; first acroscopic pinnules and first secondary pinnules stunted, commonly protecting pinna or pinnule departures, especially in the lamina apices (these often referred to as stipule-like pinnules); costae abaxially and adaxially with hairs and trichomidia, adaxially the sulcus confluent with those of the costules; costules and veins abaxially and adaxially with hairs and trichomidia, or glabrous; sori marginal, provided with a true adaxial indusium, the indusium reflexed over the sori or plane; spores monolete.
A
Forma de vida
TerrestreA
Elevación
(900 –)1000 – 2800 mA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC