L.  Schwarten, ?Index to American Botanical Literature?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 460-468, 1948.

N. Y.  Sandwith, ?Contributions to the Flora of Tropical America: XLVIII. Notable Additions to the Flora of British Guiana?, Kew BulletinKew Bulletin, vol. 3, pp. 303-322, 1948.

B.  Maguire, ?Plant Explorations in Guiana in 1944, Chiefly to the Tafelberg and the Kaieteur Plateau-III?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 286-323, 1948.

B.  Maguire, ?Plant Explorations in Guiana in 1944, Chiefly to the Tafelberg and the Kaieteur Plateau-V?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 523-580, 1948.

B.  Maguire, ?Plant Explorations in Guiana in 1944, Chiefly to the Tafelberg and the Kaieteur Plateau-IV (Continued)?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 374-438, 1948.

B.  Maguire, ?Plant Explorations in Guiana in 1944, Chiefly to the Tafelberg and the Kaieteur Plateau-II?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 189-230, 1948.

B.  Maguire, ?Plant Explorations in Guiana in 1944, Chiefly to the Tafelberg and the Kaieteur Plateau-VI?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 633-671, 1948.

L.  Schwarten, ?Index to American Botanical Literature?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 586-596, 1948.

L.  Schwarten, ?Index to American Botanical Literature?, Bulletin of the Torrey Botanical ClubBulletin of the Torrey Botanical Club, vol. 75, pp. 674-690, 1948.