Christian Schlomann has visited the Abruzzo mountains and sent me this beautiful Orchis purpurea. Campo Imperatore is a mountain grassland in the Gran Sasso massiv, in an altitude between 1500 and 1900 meters.
Ophrys flowers which lack Anthocyanin pigments often have a green labellum, with a white pattern. This is beautifully demonstrated by this Ophrys bertolonii in Southern Croatia. It is quite similar to the one which Pavel found in Northern Croatia.
The first albiflora contribution of this spring is coming from Werner Hahn who has found and photographed this impressive Anacamptis collina in the Southern Spanish region Extremadura.
Starting into 2015 I received a nice mail from Mirjana and Nebojša Jeričević living on the Dalmatian island of Korčula. They sent me photos of albiflora forms of five species, Orchis quadripunctata (above), Anacamptis pyramidalis, Himantoglossum robertianum, Dactylorhiza romana and Orchis italica. Especially interesting are those of Dactylorhiza romana. Those plants show some light yellowish hue but are not as yellow as the common yellow form of this bi-coloured species. They are are growing among violet forms and it might be assumed that they are plants whose flowers should have been violet but lost the anthocyanins pigments.
Visiting this Eastern region of Switzerland, my special interest was focussed on Epipogium aphyllum, flowering in dark forests. “Aphyllum” refers to the lacking of any leafs – and so they don’t have any chlorophyll. Some plants also miss anthocyanins – the Swiss expert of the region, Joe Meier, sent me a a photo of a totally white flower found recently. He pointed out that this form could not only be addressed as albiflora, but also as albino – following the definition of a plant without any pigments. I’ve found a plant with reduced anthocyanin in its lip, while a rose hue is still slightly existent:
The trip to the region near the charming town Scuol also confirmed the slightyl increased tendency of Gymnadenia to develop albiflora forms. While there has been quite a lot of Gymnadenia conopsea with a marked purple colour, I also met a white-flowering plant:
Most of Gymnadenia odoratissima tend to a very bright purplish colour while retaining some visible hue of it. But on a mountain meadow there was also a plant without any anthocyanin in the flowers, even the column being yellowish-whitish:
Orchis olbiensis has a colourful and a light variety, as it is stated by Kretzschmar/Eccarius/Dietrich in “Die Orchideengattungen Anacamptis, Orchis, Neotinea” (Buergel 2007, p. 322). The light variety has flower colours between rose and almost white – with a colourful lip pattern contrasting to the light background. The white-flowered plant comprises almost half of the populations in Spain, the authors observed – quite in difference to the almost purplish flowers of Orchis olbiensis in France.
Five years after visiting Orchis olbiensis for the first time in Southern France, I had now the chance to study Orchis olbiensis in Southern Spain, in the province of Malaga. Though in mid-April I’ve been quite late for this species, I found two albiflora forms of Orchis olbiensis in the limestone formation of the Torcal, near the small town of Antequera. The greater plant had nine almost white flowers with the fine purplish dots still conserved. In this habitat there were also growing Anacamptis papilionacea, Ophrys scolopax and Orchis mascula subsp. laxifloraeformis.
Finally, I’ve met her: The bee orchid at the Rhine port of Basel which has been described as Ophrys apifera var. basiliensis – in 2006, Paul Delforge “downgraded” her to Ophrys apifera f. basiliensis.
My Swiss friend Klaus Hess has told me a couple of years ago about this special population of bee orchids. Now we met at Basel and took the bus to a place called Waldhaus. There, we walked to the bank of the Rhine. Between the railway tracks and the river, limited between the container terminal to the West and the old Auhafen to the East, there is a small strip of grassland quite rich with species. Dominated by Bromus erectus, there is also growing Knautia arvensis, Geranium pyrenaicum, Leucanthemum vulgare and other flowers.
Soon Klaus found the first of these special bee orchids. They are special not only due to their lack of pigments, but also to the special form of the petals. Those are sepaloid, much longer and broader than usual with bee orchids. We are just in the beginning of the flowering time. As Klaus was looking for further plants I studied the flower with my camera – and observed the rare visit of an Andrena bee at a bee orchid. It was just a visit, not a pollination at all, though the bee carried pollen from other flowers. Ophrys apifera is autogamous, and the yellow pollinia are soon falling down to perform self fertilisation.
The next surprise on this Ascension holiday was meeting Stefan Schwegler, who has described those bee orchids as Ophrys apifera var. basiliensis (in: Orchid Review 112/2004).
He showed us a couple of other plants, among them a regular Ophrys apifera with its brown and yellow pigments as well as Platanthera chlorantha, Anacamptis pyramidalis and Dactylorhiza fuchsii. And he told us about the permanent struggle to conserve this special place against commercial interests of the port management. The population of Ophrys apifera var. basiliensis is declining, Stefan Schwegler explained, but still consists of about 100 plants. Most of them don’t flower every year, but wait for their moment to appear.
Though Dactylorhiza fuchsii is developing albiflora forms more often than other European orchids, especially in certain regions (Ireland, some German regions), there are no mentions of white-flowered Dactylorhiza saccifera. Both species are diploid and related with each other. Exploring the marsh areas of the Smolikas mountain in mid-June in Northern Greece, I’ve seen this splendid Dactylorhiza saccifera f. albiflora on wet grounds, in a height of 1200 m, embedded in Marsh Horsetails (Equisetum palustre) and accompanied by Dactylorhiza baumanniana and Neottia ovata.
In the same area there was also a white-flowered Gymnadenia conopsea with a slight purple hue.
Another highlight of the field trip to Northern Greece: three white-flowered Dactylorhiza cordigera on a clearing in the Vitsi mountain range near Kastoria. Those were surrounded by more than 1,000 cordigera plants with their characteristic deep purple colour.
The picture of albiflora forms of late flowering orchids in Northern Greece was completed by a Dactylorhiza incarnata f. albiflora near the village of Chrisi:
Two white flowered forms of Orchis are presented by Norbert Griebl in the latest edition of “Berichte aus den Arbeitskreisen Heimische Orchideen” (29/2012, 2, p.94-110). The contribution gives an overview of the seven Orchis species in Austria and shows their distribution maps. About Orchis spitzeli he notes: “In some years white or whitish plants appear at the location in Salzburg.” The paper has a photo of a second white-flowered plant, an Orchis mascula subsp. speciosa fo. albiflora. In the same edition of the “Berichte”, Adolf Riechelmann decribes his field trip to Ibiza and mentions an apochrome specimen of Ophrys dyris, found at the southern tip of the Mediterranean island. But the main article of the edition is contributed by Werner Hahn: In the footsteps of Christian von Steven. Searching orchids and pollinators in the Crimean mountains 2011 and 2012 – an exciting study of the orchid flora of the peninsula and as well as of a special chapter of the history of botany.
On the occasion of a visit to Prague I looked up some specimens at the Charles University Herbarium (PRC). In order to help a friend, I searched for the holotype of a plant which was described by the Bohemian botanist Ignaz Friedrich Tausch as Ophrys purpurea (Flora; oder, (allgemeine) botanische Zeitung. Regensburg, Jena 1831) – now regarded as a synonym of Ophrys apifera or as Ophrys apifera var. tilaventina. The holotype was said to be in the herbarium in Prague, so I searched several packages of Ophrys specimen there, with the much appreciated help of PRC’s curator Jan Stepánek.
The holotype of Ophrys purpurea was not there, but I found an interesting specimen collected by the French botanist Jean Michel Gandoger (1850-1926):
The description carries the information that Gandoger collected this plant in 1879 near Algier as Ophrys apifera f. elata, formerly described by Tausch as Ophrys purpurea:
At the end of my visit I searched a further package of specimens with dried Orchis plants – hoping to find a albiflora specimen. Instead I detected a specimen collected by Tausch as Jan Stepánek confirmed by examining the hand-written label with the nomber “1470” attached to the stipe of the plant:
A further label written by an unknown person has the information: “Orchis mascula L. vom berge Rhadisken bei Leitmeritz” – this information matches the catalogue of “Fundorte der Flora Boehmens nach weiland Professor Ignaz Friedrich Tausch’s Herbarium Florae Bohemicae alphabetisch geordnet von Johann Ott”, published 1859 in Prague:
So who was this Ignaz Friedrich Tausch? The Bohemian botanist was born on January 29th, 1793, in Udrči near Karlovy Vary. After his thesis about “De inflorescentia” (1835) he was director of the botanical garden of duke Canal de Malabaillas in Prague. He studied a broad spectre of plants and published “Bemerkungen über einige Arten der Gattung Paeonia” (1828) as well as his Flora Bohemiae (1831). Tausch was all his life rather poor, Stepánek told me. So he sold dried plants ot different herbariums. Tausch died on 8th September 1848 in Prague.