Collecting localities



Biographical data

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Mortensen, Dr Ole Theodor Jensen


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

(Source: Flora Malesiana ser. 1, 5: Cyclopaedia of collectors, Supplement I)

(Source: Flora Malesiana ser. 1, 8: Cyclopaedia of collectors, Supplement II)


Born: 1868, Harløse ved Hillerød, Denmark. Died: 1952.



Head-Curator of the Dept of Invertebrates, Carlsberg Institute, Copenhagen, 1917-33. He made a zoological world collecting trip to Japan, the Philippines, Australia, New Zealand, Hawaii, California, Panama, etc., in 1913-16. He was the leader of the Danish expedition to the Kai Islands in 1922, sent out by the Rask-Ørsted Fund at Copenhagen.1


Collecting localities:

1922. Moluccas. cf. sub Hj. Jensen and Iboet. After the departure of Jensen, Mortensen visited Banda (May 31-June 21); Makassar (SW. Celebes; June 27-29); Java Sea and Sunda Strait (July 13-Aug. 8); Tjibodas and Buitenzorg in W. Java; Sunda Strait again (1st week of Sept.).2

During the Danish Expedition to the Kai Islands, he collected a Thalassia on the N. coast of Doe Roa (= P. Doeroa) (Apr. 25, 1922).



Cf. sub Hj. Jensen and Iboet. Mortensen collected plants too, particularly marine phanerogams: in Herb. Copenhagen [C].

Above-mentioned plant is no 227 in the number series of Hj. Jensen (see there).



(1) cf. Dammerman in Ann. Jard. Bot. Buit. 45, 1935, p. 45.

(2) Th. Mortensen: ‘The Danish Expedition to the Kei Islands in 1922’ (Vidensk. Medd. Dansk naturh. For. 76, p. 55-99; exclusively dealing with marine investigations); ‘Lands Plantentuin, Buitenzorg’ (Nat. Verden 22, p. 17-23, 5 fig.).


biographical data:

Entom. Meddel. 15, 1936, p. 358-360, fig. 102 portr.; Biogr. Leksikon 16, p. 148-150; in Christensen, Den Danske botaniske litteratur 1912-1939, 1940, p. 91; Vidensk. Medd. Dansk Naturhist. For. 114, 1952, p. v-xx, with portr. and bibliogr.; Dansk Bot. Ark. 21, 1963, p. 68.


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