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BLUMEA Two 34 167-172 (1989) new of Mediocalcar (Orchidaceae) species from Guinea New A. Schuiteman Rijksherbarium, Leiden, The Netherlands INTRODUCTION Since the establishment of Mediocalcar varieties have been described in this genus. acters, which lack in progress the at diagnostic nized, but much work remains became apparent common that throughout from all other be can species J.J. Smith in of these value for distinction Rijksherbarium suggests remarkable genus by Many to two distinct the highlands species the still are a they can of these easily They be and 3 species on trivial char- should be recog- classification of this investigations of which undescribed, of New Guinea. of the genus and species satisfactory course 51 based level. Revisional work species that less than 15 be done before produced. During at 1900, are are one strikingly recognized by it is soon fairly different their vegeta- tive characters alone. DESCRIPTIONS Mediocalcar decoratum Schuiteman, congeneribus pseudobulbis A culato, calcari profunde material K), Papua Mediocalcar R.T. Northen Roots c. saccato New spec.; A.B. mm slightly clavate, nate to the thick, long, nose. by 2-4 'Miniature densely mm Young c. 1 one wide; shoots more Orchids' synanthous, parvis T 1400 m, y p Iabello u s: perbreviter ungui- Morrison 1659 (spirit February 1978. — Mediocalcar spec.; (b/w photograph). long, frequently 3-6 mm mm across, apart, cylindrical almost four-foliate. Leaves very entirely as well as to subacute, rarely acute, minutely mucronate; the bases of heteranthous inflorescences the base without an Inflorescences exposed solitary, ad- shortly petio- plane, narrowly elliptic (index 3.5-6), (7-)10-18(-23) apex obtuse at — thick. Pseudobulbs 1-5 mm 3-5 transparent, subacute, keeled sheats. rarely floribus extenso differt. 1. Fig. covered with root-hairs. Rhizome creeping, free- mm (5—)10—15(—20) rhizome; three-, late, spreading in — Graf (1978) 735, 'Tropica' (colour photograph). ly branching, mat-forming, to quadrifoliatis, labelli Guinea, Central Province, Efogi, (1980) 108, fig. 98 0.5 tri- vel ad basin nov. spec. mm car- enveloped heteranthous bract. Peduncle 3-7 mm long, or at 168 Fig. BLUMEA 1. Mediocalcar decoratum column; g. Schuiteman. VOL. a. 34, Habit; column (a Schuiteman 69; b-g Womersley No. b. 1, 1989 flower; s.n. c. petal; 30-10-1969). d. lip; e. sepals; f. lip & A. Schuiteman: the apex with 5-7 Synsepalum mm. free tened; All long. less Flowers c. 3 mm reflexed; margins 2000 cylindrical, in Epiphyte Castanopsis, identical in green The colour above, pale pseudobulbs Irian of JαYA. Mountains: PAPUA 41543. — (received green 18725. column; spur deeply the base of to wide mm mm at the apex, trunk on usually branches of Notho- major or in shaded Altitude 900- positions. of Kratke ex Kew). — March Sept. 1975, — mountains E 12 alt. light take petals grass-green are dull to Leaves and purple tinge. on a and in Kumopa Vink ?, May 1960, Arandora, & Schram BW 1600-2000 m, March-April of al. 1978, Prov.: Mt Agamoia and Mt m, m, alt. 8666; ?, OcL Central 1958, Bergman 140, above m, Notes. Mediocalcar decoratum is inflorescences, species the 1000 m, s.n.. Womersley — s.n. characterized, M. 26827 date?, Womersley (4 m, Millar & Garay NGF miles 1982 from (not logging area 1850 m, 1300 1940 m, Cruttwell Brass Origin flower, SE of material 2000 Wau, 1980, m, Febr. Jan. 1900 m, station, Sept. Cribb 1976, 1980, Hope ANU Mt not stated 1070 m, Moiba, Streimann NGF 28951; (ex cult.): Mason 30/10/1969. among other things, by its 3- is of similar small pygmaeum Schltr. flowers and the S Dodd 420. Fergusson Island, 27088; July 1972, in to usually 2-foliate, occasionally produce differs in the broad leaves narrow 3 July Bulolo, 1956, m, June Mayu I., s.n.; only W of May 1954, 1975, Womersley Of these m, nr. 1963, Hartley 12168; Goroka. Aug. 1659; Kosipe Swamp, 1400 4-foliate pseudobulbs. A few other species, The latter m, al. NGF et Bot. Leiden 1954, Womersley NGF 6058; July m, 1935, Carr 10334; Efogi, Ailuluai, 900 30/10/1969; Northen 3-foliate pseudobulbs. 1850 area 1968, Henty Sept. 1963, m, Morobe Prov.: Kaismik Sept. Param, 1850 Goroka, 2000 logging Morrison Paori Febr. — Oct. cult. Hort. 19A; Aiyura-Lae road near Gumi 1250 Boridi, 1700 69. 1832; 1525 Aiyura, Chadin ex Nondugl, 1800 near Aiyura Range, south 1964, Schuiteman et 1400 m, Febr. s.n. miles Prov.: Ogelbeng, near Prov.: 22718; Unggai 1984), area, Creek 1600 m, Oksapmin, Ambua, alt.?, date?, Highlands NGF 1969, Schodde 5386; Mason I are entirely or the pseudobulbs pale yellowish-green. Prov.: Jan. Sands between Sepik Prov.: Mt Western Kim c. Milne Bay Suckling The leaves sepals. in strong of Motito, Kew. Central Prov.: 26; Efogi, 28112. the tips of the labellum and region: Arabu, near Wettamotti Highlands Range cult. Hort. 1966, Millar — of the sulphur-yellow 742. Eastern base cult. emerging parts tips with orange with white tips, examined: Lakes Wissel NEW GUINEA. West alt.?, ture. 2 long, mm 5-7 Lip inconspicuous; extending generally bright orange-red growing Southern Highlands from — The below, specimens Hoogland NGF 4963; 1604; forest, Swart (= Him) Valley, Kadubaka, 209, 282, 434, Mt 3 mm more or narrow, auricles the clasping and flat- open reflexed, 2.5-3.5 Petals mm, mm across, c. width 5-7 mm. red with green the free to 1939, Eyma 5248; Kadaitadie, July 2 by less 2.5 apically, etc., tube is sepaline Collections E c. 1 c. more or montane cut mm; apex acute; 1-nerved. claw 10 by 3 c. Dacrydium, entirely yellow. or orange 145. wide when m. Colour. m, erect, 1 c. laterally compressed, golden-yellow tips, rarely Sept. by Pedicel and ovary length, height and mm acute, without mucro, to position; Column short, much dilated Ecology. fagus, ex 5.5-7 wide in natural foot very short. Fruit or subacute 12-16 169 long. mm sepals smooth externally, conspicuously gibbose. saccate, somewhat lip. and long mm tips triangular, apex acute, the 1.5 c. urceolate-globose, oblique; 6.5-8.5 elliptic (index 5.5-7), long, Mediocalcar species of new acuminate bracteole triangular a long. mm Two (index < 3), long-clawed lip the sta- always synanthous with a weakly devel- BLUMEA 170 Fig. 2. Mediocalcar subteres column; g. column (a Kairo VOL. 34, Schuiteman. NGF 44083 ; a. Habit; b-e Reeve No. b. 1, 1989 flower; 751; f, g c. petal; d. lip; Cribb S 129) e. sepals; f. lip & A. oped spur. M. Reeve informed quadrifolium. Regrettably having published without collected by take this to folium, there just as congeneribus foliis its way into making now specimens which the to Schuiteman, spec. radicibus subteretibus, 1850 m, Yamap, near Roots c. 0.5 mm long, cending, 3-7 mm Young shoots sheaths. bract bracteole oblique, c. (1.5-)3-5(-7) nov. New long. mm c. sepals or more or less auricles well less 8-9 11-16 passing the c. 3 mm base of the lip. foot very short. Fruit apex, keeled would Ecology. yellow. as Epiphyte Araucaria, in 2 c. apply are IRIAN JAYA. Baime the to terete, more or (8—)15— free apex rhizome; as- wide; apex acute, the base with long. mm 5-5.5 wide when to 5.5-6.5 by c. 1 3-4 clavate, mm; 4-5 3-3.5 acute urceolate, mm long, mm wide. to, 2 or by narrow, 1- or 1.5 somewhat mm wide 3- mm, clasping erect, 2 c. c. La- long. Petals apex acute; claw margins extending mm acumi- triangular Flowers externally. position; apex acute; mm across, narrow open and flattened; free cut almost smooth a a high, mm mucronate. subacute, membra- the sur- at the forest, creeping on moss covered branches Altitude 1200-2000 m. flowers with a or red base. The dull green, the pseudobulbs orange-yellow; ovary the type is bright greenish- yellow-green. examined: Collections Bergman Kairo s: seen. montane etc. having yellow The leaves u Rhizome creeping, Colour. The whole flower is usually bright yellow is described y p Province, approximate, the apex with wide in natural mm Column not at at 7-10 long, developed, slightly recurved; of Nothofagus, T — Morobe only slightly spreading, mucronate, sharply long, mm long, mm mm elliptic (index 5.5-6.5), mm differt. Guinea, adnate 2-3 long, cm column; spur broadly cylindrical, Central Mountains: Swart (= Ilim) Valley, Kadubaka, 1600-2000 m, March 1958, 1980, Reeve 751. 168. PAPUA NEW GUINEA. Morobe Prov.: W of epithet quadri- the closely adpressed, imbricate, 5 and long mm largely solitary, synanthous, laterally compressed, nerved. Lip 6.5-7 Creek first 2. papillosis minute Pedicel and ovary tips triangular, subacute, — later, I found it cultivation, using Fig. — thick. Pseudobulbs Peduncle 5-15 long. mm 1 mm mm across, enveloped by Synsepalum 8-9 more much not plant, apparently 1-, occasionally 2-foliate. Leaves sessile, subterete, straight, Inflorescences 3 c. 2 c. 2.5-3.5 long; channeled above, teral bifolium describe this spe- to epithet trifolium thick, densely minutely papillose. mm 25(—35) nate M. to August 1969. frequently branching, nous planned As this attractive little 44083 (LAE, holo; AMES, K, SING, iso), Papua Creek less that he me overdue step. I refrain from many Mediocalcar subteres NGF related closely well. as A 1935, is long too are more 171 he ended his botanical activities description. a C.E. Carr in necessary probably Mediocalcar of J.J. Smith, all with heteranthous inflorescences. versteegii Some years ago T. M. as species new Mediocalcar decoratum is J.J. Smith and M. cies, Two Schuiteman: logging Bulolo, head Enga Prov.: Apapa of Baime area between 1850 m, Sept. River near Creek, Yamap, 1850 Wau and Bulolo, 1200 1980, Cribb S 159. m, Yondalia, m, 1650 Aug. 1969, m, Aug. Kairo NGF Sept. 1980, Cribb S 129\ 44083; Regma Gumi logging area 172 BLUMEA VOL. Notes. Mediocalcar subteres is practically glabrous to noticeably species, No. 1, 1989 distinguished by the naked eye but also distinctive. In all other 34, as its subterete leaves. The roots, densely papillose far as now in microscopic view, known, the are more or roots are less covered with root-hairs. ACKNOWLEDGEMENTS ing I wish to thank the directors and examine the material cited me to valuable criticism, Mr. T. M. Reeve, formerly Mediocalcar to me in Industries, PNG, Garden and Dr. J.F. at Port as of this Veldkamp 1982. Furthermore well as for making and Mr. my I thank Dr. checking for and Mr. M. M. visit to E.F. de the Latin to thank Tabaru, Galore, formerly Papua Vogel for diagnoses. generously donating I would like Mr. F. Ginate and SING for allow- AMES, CANB, K, L, LAE, S paper. Laiagam, PNG, Moresby, PNG, have all contributed to curators of in New Mr. E. I his kind am several Division both of the National Guinea in 1982 of the a most advice and obliged to living specimens Semoso, director much Lae of of Primary Capital Botanic herbarium, who successful one.