NOTES ON WALDRON’S STREY’S LITHOPS

摘要

Lithops graeilidelineata ssp. gracilidetineata var. waldroniae de Boei.is one of two varieties of L.gracilidelineata. If subspecies bramdbergensis as well as the northern (and taxonomically sunken) streyi are combined, (hey build a duster of four forms of Lgracilidelineata according to Gole (1988). The distance we measured from south Qmddromae, gmcilidelineata), through midway (brandbergensis) to north (streyi) is immense at more than 300 kilometers. The banana-shaped distribution of graeitidelineatusurrounds that of L ruschiomm (including lineata and neUi)—growing in the west, closer to the Atlantic Ocean—and almost touchesLwemeri— found at a single colony to graeilidelineata’$ east in the Etongo Mountains. Together, these eight taxa can wellbe mingled into a discrete grouping, the “Darnara Lithops” since they must be related somehow (Jainta, 2017).The otherwise anonymous Mrs. Molly M. Waldron discovered waldroniae early in 1960 about 50 kilometers from her home in Walvis Bay (Cl 89) and de Boer described it three years later (1963). Just one other locality (C243) was known by Cole from nearby. However, Schwantes (1957: 204) had received plants collected by Emil Jensen from a colony “south of Walvis Bay, from the spur of the mountain ofthe Gungochoab”, hence within waldroniae’s territory—and earlier than de Boer had received his plants. Jensen (1889-1963) was a German-born Southwest African amateur botanist who collected for Schwantes.