Orthiopteris campylura var. kingii (Bedd.) 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 : 47-49

c. Orthiopteris campylura var. kingii (Bedd.) P.H.Hovenkamp & T.T.Luong comb. nov. Figs 2g , 3c , 4d, e, f

Dicksonia kingii Bedd., Handb. Suppl.: 6. 1892.

Dennstaedtia acuminata Rosenst., Hedwigia 56: 350. 1915. Type. PAPUA NEW GUINEA. Sattelberg, alt. 800 m, April 1914. G. Bamler 139 (holo: B, B200044968* [http://herbarium.bgbm.org/object/B200044968]; iso: P, P00633321* [http://coldb.mnhn.fr/catalognumber/mnhn/p/p00633321], P00633320* [http://coldb.mnhn.fr/catalognumber/mnhn/p/p00633320]; UC, 391869* [http://plants.jstor.org/stable/10.5555/al.ap.specimen.uc391869]; S, S-P-6347* [http://andor.nrm.se/kryptos/fbo/kryptobase/large/S-P-006001/S-P-6347.jpg], S09-41598* [http://andor.nrm.se/kryptos/fbo/kryptobase/large/S09-041001/S09-41598.jpg]).

Ithycaulon acuminatus (Rosenst.) Copel., Univ. Calif. Publ. Bot. 12: 395. 1931. Type. Based on Dennstaedtia acuminata Rosenst.

Orthiopteris acuminata (Rosenst.) Copel. Philipp. J. Sci. 78: 9. 1950. Type. Based on Dennstaedtia acuminata Rosenst.

Orthiopteris kingii (Bedd.) Holttum, Rev. Fl. Mal. 2: 306. f. 175. 1954. Type. Based on Dicksonia kingii Bedd.

Saccoloma kingii (Bedd.) Parris in Parris, R.S. Beaman & Beaman, Pl. Mt. Kinabalu I. Ferns & Fern Allies: 151. 1992; G.B.Nair, J. Econ. Taxon. Bot. 16 (3): 645. “1992” [1994]. Type. Based on Dicksonia kingii Bedd.

Type.

PENINSULAR MALAYSIA. Gunong Batu Puteh, August 1885, King’s collectors 8058 (holo: K, 2 sheets: K000794854 [http://specimens.kew.org/herbarium/ K 000794854]; K000794855 [http://specimens.kew.org/herbarium/K000794855]; iso: SING, 0170905).

Description.

Sori protruding from the margin, strongly reflexed when dry, in one plane with lamina wings, 0.9-1.0 × 0.5-0.8 mm, symmetric, narrowly funnelform-obovate, widest just below mouth; inner indusium dark-brown, firm, shorter or equal to outer indusium, apex similar to outer indusium; outer indusium truncate or obtuse, shallowly undulate tip; sporangia 6-12 per sorus, capsule globose and rounded at apex, gradually narrowed toward base, indurated annulus cells 17-20, clearly unequal; spores in polar view 28-30 µm, in lateral view 20-22 µm.

Distribution.

Sumatra, Peninsular Malaysia (Pahang, Perak, Selangor), Java, Borneo (Sabah, Kalimantan Timur), Moluccas (Seram), Papua New Guinea.

Discussion.

This variety is widespread in western Malesia. It is easily recognized when dry by its distinctly protruding and reflexed sori. The ultimate segments of this variety may be the widest among the varieties of Orthiopteris campylura , although many collections from the Moluccas have narrow segments. The abaxial surface is scaly, but the scales are very small and not easily observed.

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.

Figure 4. a-d Rhizome scales and e-h rachis scales of Orthiopteris. a Orthiopteris cicutarioides (Carr 13257, L) b Orthiopteris ferulacea (Smith 8932) c Orthiopteris firma (Green 1793, K) d Orthiopteris campylura var. kingi (Hoogland & Craven 10162, L) e, f Orthiopteris campylura var. kingi (Larhing 6910, L) g, h Orthiopteris samoensis (Reinecke 97 a, L). Scale bars: 1 mm (a-d), 0.1 mm (e-h).