SITF Submissions and Findings

Polystachya-lawrenceana-2023-01-03

Posted on Jan 3, 2023

PDF versions of the forms have been attached along with the images.

Polystachya-parva-Susan-CBR/AOS-2022-02-07 *SITF has confirmed this plant as Polystachya parva (Dec 2022); the size of the plant and presentation matches the illustration and description in la Croix's African Orchids (1997) and Williamson's Orchids of South Africa (1977); this plant matches photos and descriptions of P. parva being light green in color with large dark magenta markings at the base of the lip; SITF also has determined the older 1975 CBM award to P. parva, Award #19750047, is most likely Polystachya bennettiana; the overall color of white and orange and larger plant size matches P. bennettiana and not P. parva.*

Posted on Feb 7, 2022

Fourteen non-resupinate flowers held on three upright infloresences held above pairs of of leaves up to 3 cm long borne on 1 cm globose pseudobulbs growing on a hardwood stick; recurved dorsal sepal l...

Polystachya-subdiphylla-2021-09-28***Confirmed as Polystachya subdiphylla (Oct 2021); matches the original Summerhayes description in the 1942 Botanical Museum Leaflets; characteristics include well-developed sheaths with articulation well removed from the apex of the pseudobulbs and dried sheath bases that remain attached when the blades are shed; an abbreviated rachis with a long peduncle containing only three or four white flowers with red-marked lips; this plant also matches the description in Cribb's Flora of Tropical East Africa.***

Posted on Sep 28, 2021

Origin or plant: Tanzania

Polystachya-cultriformis-Vanderlip-CHM-83-Pts-2021-01-26***Confirmed as Polystachya cultriformis (July 2021); the key to Polystachya in the book, "Wild Orchids of Southern Africa" by Joyce Stewart. et. al. keys this to Polystachya cultriformis; it also fits Isobyl's description and photos in "African Orchids in the Wild and in Cultivation"; it has slightly wavy leaf margins with conical pseudobulbs tapering towards the apex; size and color are variable; the major characteristic in the key is that P. cultriformis is the only species in the Genus with a single leaf on each pseudobulb as does this plant. ***

Posted on Jan 26, 2021

Ninety-two cupped flowers and 64 buds on nine multiple branching, semi-pendulous inflorescences, 2 developing inflorescences, longest inflorescence 24cm long; sepal and petals cream-colored, margins v...

Polystachya-cultriformis-Vanderlip-CHM-83-Pts-2020-03-24

Posted on Mar 24, 2020

Two hundred and seventy-seven cupped flowers and 35 buds on nine multiple branching, semi-pendulous inflorescences, longest inflorescence 24cm long; sepal and petals cream-colored, margins very pale p...

Polystachya-malilaensis-Irene-CBR/AOS-2019-10-24***Lip shape, carriage and curvature, and the hirsute dorsal surface of the sepals all match, Confirmed (Dec 2019)***

Posted on Oct 24, 2019

Two non-resupinate flowers and four buds on two inflorescences on a 5.5 cm tall plant in a 5 cm diameter round clay pot; sepals and petals olive green lightly veined chestnut brown, heavily suffused c...

Polystachya-foliosa-2019-10-12***Confirmed (Dec 2019) flower size and spacing on inflorescence match***

Posted on Oct 12, 2019

Polystachya-brassii-2018-10-24***Determined to be Polystachya greatrexii with the assistance of Andre Schuiteman (Nov 2018)***

Posted on Oct 24, 2018

Polystachya coriscensis

Posted on Jan 10, 2014

Polystachya coriscensis Rchb.f., Otia Bot. Hamburg.: 112 (1881). this name is acceptedDendrorkis coriscensis (Rchb.f.) Kuntze, Revis. Gen. Pl. 2: 658 (1891).Polystachya bituberculata Kraenzl., Bot. Ja...