Possible origin of the pink Sinningia eumorpha (1995)

Date: Thu, 14 Dec 1995 10:47:28 -0800 (PST)
From: David Zaitlin <dzaitlin@netcom.com>
Subject: Re: "Pink Eumorpha"
Message-ID: <Pine.3.89.9512141028.A10888-0100000@netcom>

For many years I grew a plant that I obtained (from Lyons, I think) as 'Pink Eumorpha'. I used it extensively in hybridizing in the late 1970s. It had a very 'eumorpha'-shaped flower and was a large grower. In the 1980s, I decided to try and inbreed this plant so that people could grow it true from seed. I went out three or four generations, growing only a few plants each time and selfing one of them for the next go-around (I had space limitations). I have not continued with this project, but I can say w/o a doubt that my 'PE' is a hybrid because in the third generation I found a plant that had nearly tubular flowers, not pouched. The flowers were pink like the original, but they were also much more "hairy" (bigger trichomes). This only compounds the 'Pink Eumorpha' situation, however, because I am certain that more than one plant went by this name. Ron Myhr's 'Pale Beauty' is an F1 hybrid between the white-flowered form of the species and a form with pink flowers. His PE could be different than my PE.

That's all I know.

Date: Fri, 15 Dec 1995 01:56:48 -0500
From: HWiehler@aol.com
To: Gesneriphiles@lists.colorado.edu
Subject: Re: Sinningia eumorpha
Message-ID: <951215015647_73443742@mail04.mail.aol.com>

In the nice discussion whether Sinningia 'Pink Eumorpha' is of hybrid origin or a mutant of Sinningia eumorpha H.E. Moore, it will be worthwhile to go back to the origins of the latter. It comes from the Serra de Botucatu, in western Sao Paulo state of Brazil.

It showed then up in the Botanical Garden in Sao Paulo City, and then in 1951 the Wilsons had it in their Fantastic Gardens in Miami, the place of introduction of much new horticultural material in North America at that time. It was there and at SP labelled Sinningia maximiliana Hanstein. Hal Moore, from the Bailey Hortorium at Cornell University saw it there, brought one plant up to Cornell, under BH greenhouse accession number G-199.

The mission of the BH is finding the correct botanical names for (new) plants cultivated in the US (and Canada).

G-199 differed from the description of S. maximiliana, and Hal Moore published a new description for G-199 in the BH's journal Gentes Herbarum, in 1954, with the name S. eumorpha, and a very good illustration by Mitsu Nakayama. The description states: "corolla white or faintly flushed with lavender...", "stigma stomatomorphic," (=mouth-shaped), and the nectary consisting of 2 large glands.

Here are some features to distinguish S. eumorpha from S. 'Pink E'. S. cardinalis (where the pink could be coming from) has a pinhead-shaped stigma. Check your S. 'Pink Eumorpha' for the shape of its stigma. For those interested in persuing this problem, the GRF can send you a copy of Moore's original description and illustration. We here at the GRF have a duplication of the BH gesneriad collection started in 1950 (alas, not much left of it) and a continuation of the same G- number system, now at G-3882.

Hans Wiehler

Gentes Herbarum, 8(5): 390 (1954)

Sinningia eumorpha appears to belong to § Hemiloba but differs from S. Maximiliana, (Hanst.) Benth. & Hook, ex Fritsch and S. macrophylla, (Nees & Mart.) Benth. & Hook, ex Fritsch in its solitary, white or only lavender-flushed flowers and above all in the disk that is reduced to 2 prominent and 3 rudimentary glands or more often to 2 glands alone.

Sinningia eumorpha, spec. nov. Fig. 124.

Herba perennis, totaliter pilosula caulibus brevibus 3.5 cm. longis: folia opposita cordato-ovata crenata 3-12 cm. longa 2.5-7 cm. lata: flores solitarii axillares nutantes 5 cm. longi albi infra tubum luteo- et violaceo-lineati; lobi calycium ovato-lanceolati 8-10 mm. longi; corollse tubus elongatus superne ampliatus; disci glandular 2 posticae.

A perennial herb, pilosulous in all vegetative parts: stems short, reddish, to 3.5 cm. long: leaves opposite, congested, the reddish petioles 1-8 cm. long, 3-5 mm. diameter, the blades 3-12 cm. long, 2.5-7 cm. wide, cordate-ovate, crenate, glossy green and densely pilosulous with 6-8 pairs of impressed veins above, pale green or sometimes red-flushed and pilosulous with prominent veins below: flowers solitary, axillary, nodding, on peduncles ca. 10 cm. long, the calyx-tube ca. 4 mm. long, neither winged nor margined, the calyx-lobes 8-10 mm. long, ovate-lanceolate, spreading; corolla white or faintly flushed with lavender and densely pilosulous outside, tube 3 cm. long on the upper side, 4 cm. long on the lower side, slightly gibbous at the base dorsally, inflated ventrally and slightly sigmoid dorsally, the inside with a red-dotted yellow band margined with violet on the lower side, lobes rounded, the upper recurved, 8 mm. long, 10 mm. wide, the lower spreading, 8 mm. long, to 15 mm. wide, lined with violet; anthers subcordate, coherent, bent downward and backward on the glabrou8 filaments as the style elongates; disk of 2 creamy-white dorsal glands with sometimes the rudiments of 3 others; free portion of the ovary densely red pilosulous, style white, pilosulous, stigma stomatomorphic: capsule ca. 10 mm. long, loculicidal, 2-valved with persistent style.

Cultivated at Cornell University, Ithaca, New York, October 1953, 11 E. Moore, Jr. 6470 (BH, type)

124. SINNINGIA EUMORPHA. a, habit X1/2; b,c, flower lateral view and vertical section X ; d,e, anthers, ventral and dorsal views X3; f, portion of gynoecium and disk-glands x3; g, stigma X ; h, ovary. cross-section X4; i, capsule X1

Gentes Herbarum, 8(5): 398 (1954)

XGloxinera rosea, H. E. Moore and R. G. Wilson, hybr. nov. [Rechsteineria macropoda X Sinningia eumorpha ].

Hybrida inter Reichsteineriam macropodam et Sinningiam eumorpham intermedia caulibus rubro-lineatis 15 cm. longis: folia 4 paria elliptica 15 cm. longa 12 cm. lata crenata pilosula: pedunculi axillare elongati: flores 3 pedicellati eis Sinningiae eumorphae similes sed rosei.

Plants intermediate between the two parents, the stems up to 15 cm. high, reddish-flushed and lined, densely pilosulous, bearing 4 pairs of leaves: petioles elongate, green, pilosulous, flecked with red, 5-11 cm. long, blades elliptic-ovate, to 15 cm. long, 12 cm. wide, green and pilose above, paler and pilose on the veins below, the margins crenate: flowers nodding, orange in bud, pink at anthesis, 2-3 in each umbel on ebracteate pilosulous peduncles ca. 8 cm. long, the pedicels ca. 7 cm. long; calyx-lobes spreading, lanceolate, 15 mm. long, green, pilosulous; corolla similar to that of Sinningia eumorpha, the tube densely and minutely red pilosulous, 3 cm. long, the lobes clear pink, ca. 10 mm. long, 15 mm. wide; stamens I with the anthem united in a square, the filaments nearly glabrous; style densely glandular, the stigma substomatomorphic, the red ovary densely pilosulous; glands of the disk 2.

Cultivated at Fantastic Gardens, South Miami, Florida, February 23, 1954, H. E. Moore, Jr. 68.5 (BH, type).

XGloxinera rosea originated in the greenhouses of Mr. R. G. Wilson at South Miami, Florida. Two plants, very similar in general aspect but differing in flower-color, were raised from seed and are currently being propagated3. Both clones have the taller habit of Rechsteineria but bear axillary umbels of Sinningia-like flowers in two shades of pink. As yet neither back-crosses nor self-crosses have been completed but it is of interest to note that the pollen of the first generation progeny appears to be at least 50% fertile.

3 Mr. Wilson has requested me to note that XGIoxinera rosea will not be available before the spring of 1955.

Trichomes bibliography