-
Novelties in the Orchid Flora of the Guayana Highlands II
Vol 20, Iss 1, Page 1, Date 1962-08-01
-
The Hallucinogenic Mushrooms of Mexico and Psilocybin: a Bibliography
Vol 20, Iss 2, Page 25, Date 1962-09-07
-
A New Species of Salvia from Mexico
Vol 20, Iss 3, Page 75, Date 1962-12-28
-
A New Mexican Psychotropic Drug from the Mint Family
Vol 20, Iss 3, Page 77, Date 1962-12-28
-
Resia--A New Genus of Gesneriaceae
Vol 20, Iss 3, Page 85, Date 1962-12-28
-
New Orchids from Ceylon
Vol 20, Iss 4, Page 93, Date 1963-01-30
-
Spread of Eight-Rowed Maize from the Prehistoric Southwest
Vol 20, Iss 5, Page 117, Date 1963-05-01
-
Notes on the Present Status of Ololiuhqui and the Other Hallucinogens of Mexico
Vol 20, Iss 6, Page 161, Date 1963-11-22
-
The Active Principles of the Seeds of Rivea corymbosa and Ipomoea violacea
Vol 20, Iss 6, Page 194, Date 1963-11-22
-
A New Gossypium from the Cape Verde Islands
Vol 20, Iss 7, Page 213, Date 1963-11-29
-
Plantae Colombianae XVI: Saurauiae Provinciae Putumayonis Species Nova
Vol 20, Iss 7, Page 221, Date 1963-11-29
-
Present Status of Botanical Studies of Ambers
Vol 20, Iss 8, Page 225, Date 1964-05-08
-
Tripsacum as a Possible Amphidiploid of Wild Maize and Manisuris
Vol 20, Iss 9, Page 289, Date 1964-06-30
-
Plantae Colombianae XVII: De Plantis Regionis Amazonicae Notae
Vol 20, Iss 9, Page 317, Date 1964-06-30
-
Philoglossa--A Cultivar of the Sibundoy of Colombia
Vol 20, Iss 10, Page 325, Date 1964-12-30
-
Louis C. Bierweiler: An Appreciation
Vol 20, Iss 10, Page 334, Date 1964-12-30
-
Plantae Colombianae XVIII. Plantarum utilium Speciei Duae Novae
Vol 20, Iss 10, Page 336, Date 1964-12-30