Orthiopteris campylura var. caudata (Copel.) P.H.Hovenkamp & T.T.Luong, 2015

Luong, Thien Tam, Hovenkamp, Peter H. & Sosef, Marc S. M., 2015, Revision of the fern genus Orthiopteris (Saccolomataceae) in Malesia and adjacent regions, PhytoKeys 53, pp. 39-71 : 47

b. Orthiopteris campylura var. caudata (Copel.) P.H.Hovenkamp & T.T.Luong comb. nov. Figs 2e , 3g

Saccoloma caudatum Copel. Philipp. J. Sci. 30: 327. 1926.

Ithycaulon caudatum (Copel.) Copel., Univ. Calif. Publ. Bot. 16: 80. 1929b. Type. Based on Saccoloma caudatum Copel.

Orthiopteris caudata (Copel.) Copel. Philipp. J. Sci. 78: 9. 1950. Type. Based on Saccoloma caudatum Copel.

Type.

PAPUA NEW GUINEA. Hydrographers Range, alt. 900 m, King 462 (holo: MICH, 1190968* [http://quod.lib.umich.edu/h/herb2ic/x-mich1190968/mich1190968.tif]).

Description.

Sori not protruding from the margin on distinct lobes, not reflexed when dry, in one plane with lamina wings, 0.7-0.9 × 0.6-0.7 mm, asymmetric, funnelform, widest at mouth of sori; inner indusium bright-brown, firm, usually shorter but not shorter than 2/3 length of outer indusium, apex with c. 0.2 mm long lobe (<1/3 length of sorus); outer indusium emarginate to undulate-truncate; sporangia 17-21 per sorus, capsule globose and rounded at apex, gradually narrowed toward base, indurated annulus cells 17-20, clearly unequal; spores in polar view 28-32 µm, in lateral view 25-28 µm.

Distribution.

North Moluccas, Papua New Guinea.

Figures

Figure 2. Ultimate segments. Arrows show distance from base of the shallowest sinuses to nearest costule / vein. a Orthiopteris ferulacea, Smith 8932 (K) b Orthiopteris cicutarioides, Carr 13257 (K) c Orthiopteris samoensis, Reinecke 97 a (L) d Orthiopteris trichophylla, Brass 12239 (L) e Orthiopteris campylura var. cautada, Carr 12518 (L) f Orthiopteris campylura var. laxa Mueller s. n. (L) g Orthiopteris campylura var. kingii, Brass 12941 (MICH) h Orthiopteris henriettae, Lam & Meeuse 5892 (L) i Orthiopteris campylura var. insularis Braithwaite 4110 (L). All scale bars 1 mm.

Figure 3. Sori of Orthiopteris seen from abaxial side. a, b Orthiopteris campylura var. campylura (Cuming 119, MICH) c Orthiopteris campylura var. kingii (Brass 12941, MICH) d Orthiopteris trichophylla (Brass 12239, L) e Orthiopteris tenuis (Smith 9154, L) f Orthiopteris tenuis (Smith 7274, L) g Orthiopteris campylura var. caudata (Carr 12518, L) h Orthiopteris cicutarioides (Carr 13257, K) i, j Orthiopteris campylura var. insularis (Braithwaite 4110, L) k Orthiopteris tenuis (small segment) (Degener 14648, L) l Orthiopteris ferulacea (Smith 8932, K) m, n Orthiopteris firma (Schlechter 14890, L) o, p Orthiopteris campylura var. laxa (Mueller s. n., L) q, r Orthiopteris henriettae (Lam & Meeuse 5892, L) s Orthiopteris henriettae. t Orthiopteris samoensis (Reinecke 97 a, L) u, v Orthiopteris samoensis (Vaupel 312, L). All scale bars 1 mm, oi = outer indusium, ii = inner indusium.