Species Information - Pomatocalpa macphersonii

Pomatocalpa macphersonii (F.Muell.) P.F.Hunt, Queensland Naturalist 16 (1958) 27

Type:

Synonyms:

• Saccolabium macphersonii F.Muell., Fragm. 7 (1870) 96
  - Type: Dallachy s.n. (Australia, Q, Rockingham) (holo MEL; iso K)
• Sarcanthus macphersonii (F.Muell.) Rupp, Victorian Naturalist 57 (1941) 219
• Sarcochilus macphersonii (F.Muell.) F.Muell., Fragm. 8 (1874) 248
• Cleisostoma macphersonii (F.Muell.) Benth., Fl. Austral. 6 (1873) 297
• Cleisostoma incurvum J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 2 (1911) 20
  - Type: Bogor cult. (Exp. Lorentz, Djibdja 628) s.n. (Noord River) (holo BO; iso L)
• Pomatocalpa incurvum (J.J.Sm.) J.J.Sm., Natuurk. Tijdschr. Ned.-Indië 72 (1912) 104
• Pomatocalpa potamophilum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1913) 988
  - Type: Schlechter 16312 (B, lost; BO, E, K, L, NSW); 18287 (B, lost; BO, E, K, L 2x, NSW)

Basionym: Saccolabium macphersonii

Stem short. Leaves few, widely patent, ligulate, subfalcate-oblique, half-twisted at the base, at the apex broadly obtuse, rounded-bilobed, undulate, mid-rib grooved above, keeled below, above on either side of mid-rib convex, 11 cm long, 2.35 cm wide; sheaths tubular, strongly laterally flattened, short. Inflorescences pointing downwards, unbranched, c. 11-flowered, c. 3.4 cm long (or more); peduncle 1.2 cm long with a few very small scales; rachis angular. Floral bracts appressed, very small, triangular, much shorter than the ovary. Flowers rather small, 0.83 cm wide. Sepals and petals incurved, fleshy. Median sepal almost spathulate-oblong, broadly obtuse, 0.45 by 0.24 cm. Lateral sepals oblique obovate, at the base slightly contracted, broadly obtuse, 0.43 by 0.27 cm. Petals spathulate-oblong, slightly falcate, broadly obtuse, 0.4 by 0.16 cm. Lip adnate to the column-foot, spurred, 3-lobed; lateral lobes erect, about as long as the column, with the upper margin making an acute angle with the column, front margins incurved, at the base connected through a cushion-like swelling, at the apex rectangular; mid-lobe recurved, subreniform-semiorbicular, broadly obtuse, fleshy, with a cushion-like swelling at the base and a longitudinal basal groove, 0.15 by 0.28 cm; spur rather large, making a straight angle with the ovary, slightly obovoid, rounded, dorsally slightly flattened, to the apex of the ovary 0.4 cm long, 0.23 cm wide, dorsal wall inside with an erect, triangular, truncate, 3-crenulate, glabrous lamella. Column short, 0.23 cm long; rostellum recurved; stigma deeply concave, transversely elliptic. Anther cucullate, shortly and obtuse rostrate, 0.13 cm wide; pollinia 4, unequal, arranged into two obliquely elliptic-triangular masses; stipe linear; viscidium oblong, the whole pollinarium 0.13 cm long. Ovary straight, 6-grooved, 0.37 cm long. (After Smith, 1913)

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