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Styloglossum caulescens

Styloglossum caulescens

Styloglossum caulescens (J.J.Sm.) T.Yukawa & P.J.Cribb, Bull. Natl. Mus. Nat. Sci., ser. B, 40(4) (2014) 147

Type: Kock, de 144 (holo BO)

Synonyms:

  • Calanthe caulescens J.J.Sm., Bull. Jard. Bot. Buitenzorg, sér. 2, 2 (1911) 2
  • Calanthe apostasioides Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912) 377
    - Type: Schlechter 18731 (holo B, lost); Neotype: Brass 30937 (holo L; iso K)
  • Calanthe salmoniviridis P.Royen, Alp. Fl. New Guinea 2 (1979) 134, fig. 56
    - Type: Brass 9055 (holo L)

Terrestrial or epiphytic herb, erect, 25-60 cm tall; rhizome decumbent, cauliform; roots flexuous, elongate, terete, shortly tomentose. Stem unbrached, elongated, terete, glabrous, densely leafed, covered with sheaths and their fibrous remnants, margins of sheaths crenulate. Leaves erect to spreading, lanceolate to elliptic-lanceolate, acuminate, narrowed in basal part, base sheathing; lamina (6-)10-18 by 1.0-2.2(-3.2) cm. Inflorescence lateral, erect, sublax, 4-10-flowered. Floral bracts erect to suberect, elliptic, acuminate, shorter than the flowers. Flowers erect, rather small, glabrous. Median sepal obovate to oblong, rounded or acute to minutely apiculate, 0.8-1.1 by 0.35-0.45 cm, concave, with glands in upper half. Later sepals oblique, 0.75-1 by 0.35-0.45 cm. Petals spathulate to elliptic, obtuse, oblique, 0.7-1 cm by 0.35-0.5 cm. Lip curved, lamina small, broadly oblong-ligulate, apical margins inrolled; lateral lobes basal, minute, rounded; immature flowers lack a callus, mature flowers with a transverse thickening across the mouth of the spur which in some flowers becomes a fleshy callus; spur deflexed, cylindrical, obtuse, slightly narrowed at the base, (0.2-)0.66-0.88 cm long. Column adnate to margin of lip, sometimes slightly dilated towards apex; rostellum short, emarginate. Anther subtruncate, glabrous; pollinia 8, oblique, clavate. (After Thomas, 1999).


Flower white to greenish white, lip red or salmon pink.

Terrestrial in upper montane forest in exposed positions, also on road banks. Altitude 2300-3250 m.

Malesia (New Guinea, endemic).

Papua (Indonesia); Papua New Guinea. See map

distribution in New Guinea

Cool growing terrestrial, keep in light position.

April, June, July, September, October.

  • Family Orchidaceae
  • Subfamily Epidendroideae
  • Tribe Undetermined
  • Subtribe Collabiinae
  • Genus Styloglossum
  • Species Styloglossum caulescens
  • Smith, J.J., Nova Guinea 12, 1 (1913) 13, t. 4, fig. 8
  • Schlechter, R., Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 132, fig. 497, as Calanthe apostasioides Schltr.
  • Royen, P. van, Alp. Fl. New Guinea 2 (1979) 128, fig. 54, as Calanthe apostasioides Schltr.
  • Royen, P. van, Alp. Fl. New Guinea 2 (1979) 131
  • Thomas, S., Blumea 44 (1999) 31, fig. 3

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Styloglossum caulescens

overview picture

Styloglossum caulescens

Styloglossum caulescens (J.J.Sm.) T.Yukawa & P.J.Cribb, habit (in situ), photo N.E.G. Cruttwell, based on Cruttwell (9/79, PNG, Mt. Rongo)

Styloglossum caulescens

Styloglossum caulescens (J.J.Sm.) T.Yukawa & P.J.Cribb (as Calanthe caulescens J.J.Sm.), drawing J.J. Smith, from de Kock 144

Styloglossum caulescens

Styloglossum caulescens (J.J.Sm.) T.Yukawa & P.J.Cribb (as Calanthe apostasioides Schltr.), from Repert. Spec. Nov. Regni Veg. Beih. 21 (1923) t. 132, fig. 497

Styloglossum caulescens

Styloglossum caulescens (J.J.Sm.) T.Yukawa & P.J.Cribb (as Calanthe caulescens J.J.Sm.), herbarium sheet, Kock, de 144, holotype specimen (BO)

Styloglossum caulescens

Styloglossum caulescens (J.J.Sm.) T.Yukawa & P.J.Cribb (as Calanthe salmoniviridis P.Royen), herbarium sheet, Brass 9055, holotype specimen (L)