Collecting localities



Biographical data


Ploem, Joannis (or Joannes) Carolus


(Source: Flora Malesiana ser. 1, 1: Cyclopaedia of collectors)


Born: 1819, Gulpen, L., Holland. Died: Nov. 24, 1881, Sindanglaja, W. Java.



Physician; he was appointed in the D.E. Indian Army in 1851 and came out to Java in 1852, stationed successively at Willem I (Ambarawa) and Salatiga, both in Central Java. He resigned in 1853 and settled at Solo, where his practice did not answer expectations, however. He applied himself to oyster-culture, was forced by the government to discontinue his endeavours, and then erected barracks at Sindanglaja when the hospitals at Batavia and Buitenzorg were short of space. He was a lover of nature and since 1857 a member of the ‘Natuurkundige Vereeniging’ at Batavia.

Scleria ploemii Boeck. was named in his honour.


Collecting localities:

Centr. Java: Salatiga ( ? 1852-53).-E. Java.2-W. Java: collecting at Bandoeng, Radja Mandala, Sindanglaja, G. Gedeh (the caldera on Sept. 18, 1866),1 G. Pangrango, G. Salak, Tjidamar, Tjikalong, Wijnkoopsbaai (= Palaboehan) (1870).-Outside Java he collected in Singapore (1867 or 1870) and visited Banka and Sumatra in Dec. 1878.3



Herb. Bog. [BO]: > 388 nos, partly numbered in the H.B. series; many of his plants labelled Sdl (= Sindanglaja). Duplicates in Herb. Leiden [L] (partly purch.); Herb. Berl. [B]: 204 nos from Java (pres. 1871) and 26 nos from Singapore and collection of mosses; Herb. Brussels [BR] (few); Herb. Paris [P] (few); U.S. Nat. Herb. Wash. [US]: 17 from Java.

Herbarium of Ploem from Java was sent to a certain Westerman, who presented the same to Prof. C.A.J.A. Oudemans, Amsterdam (= Herb. Univ. Amsterdam). From the spores gathered from Ploem’s fern specimens the Superintendent of the Amsterdam ‘Hortus botanicus’ succeeded in raising a number of ferns which were further cultivated. Oudemans subsequently donated the material to the Leiden State Herbarium [L] (information from a letter from Oudemans to Treub!).

His labels apparently often bear incorrect localities.

In Herb. Leiden [L] several Cyperaceae are provided with an impress ‘Sumbawa Ploem’; it seems improbable that they were collected in that island by Ploem himself, it might be material of Colfs (see there).



(1) cf. van Vlaanderen in Jaarb. Mijnwezen 1873, I, p. 219-221.

(2) cf. Uittien in Rec. Trav. Bot. néerl. 33, 1936, p. 287.

(3) J.C. Ploem: ‘Eenige aanteekeningen omtrent de fauna van Banka en Palembang’ (Nat. Tijdschr. N.I. 39, 1880, p. 77-84).


biographical data:

Backer, Verkl. Woordenb., 1936; P.C. Molhuysen & Fr.K.H. Kossmann, Nieuw Ned. Biogr. Woordenb. 10, 1937, p. 736-737.