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VOLUME 11 NUMBER 3 7 Neowerdermman Nia Vorwerkii

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VOLUME 11 NUMBER 3 7 Neowerdermman Nia Vorwerkii VOLUME 11 NUMBER 3 7 Neowerdermman nia vorwerkii Photo & Collection : R.E. HOLLINGSBEE NEOWERDERMANNIA CHILENSIS NEOWERDERMANNIA VORWERKII KK 625 Fl ower and section Krainz - Die Kakteen 1. Ill .1969 2 NEOWERDERMANNiA FLOWERS by R. E. Hollingsbee My plant of Neowerdermannia vorwerkii came to me from Donkelaar as a grafted specimen, in the September of 1967. It did take quite awhile to really get going and although it flowered for the first time in 1971,1 was unable to see it in flower. This year I did catch the flower open and took the photograph alongside. The flowers are small and of a very pale lilac-white colour. The petals were short and few in number. On examination of the plant after flowering it appears that several flowers were produced from more than one of the areoles. In fact there were two or three dried flower remains in several areoles. In one areole I found not only three dead flower remains but, much to my surprise, two seed pods as well. I am sure that they were not the result of last year’s flowers, but I believe they were produced this year. The plant carried 14 flowers during the season. When I examined one dry seed pod it was found to be oval and in size between three sixteenths and V4ins. in diameter. There were four seed pods all told on the plant. Pod one contained 7 seeds and 2 undeveloped seeds; pod two contained no less than 22 seeds and 1 undeveloped seed; pods three and four, which came from the same areole, had 3 seeds and 8 large seeds respectively. The pods were deeply embedded in the wool and stem of the plant, producing quite a depression where the pod or pods had developed. I was careful to remove all pod and flower remains to prevent the possibility of rot being set up. Comments ......... from P. H. Sherville '’Although I have never had one of these plants, I have seen one in flower in another local collection. The description of the fruit as “ sunken” has in fact a very clear meaning to me! I have seen a variety of forms of this plant, some completely spineless, but I think that the most common form consists of lozenge shaped tubercles with an ancilliary areole bearing a few short reddish spines and a central somewhat hooked spine. Now whether the particular import I have in mind was still rather shriveled or not, I don’t recall, but one had to search hard for the flower! All that was readily discernable was the top 4 or 5mm of the petals which were dark wine red to purplish in colour and few in number (only about 7 or 8). The stigma was just excerted through the throat of the flower which itself was just flush with the areole — there was no trace of any ovary so it is quite possible that the fruits are akin to those of Mammillaria theresae i.e. inside the plant body! Although I do not recall seeing a fruit, “sunken” could be an apposite description. I rather have the feeling that on some plants of Neowerdermannia which I have seen there have been a few loose seeds around the tubercles without any sign of fruits at all, rather as one finds in Ariocarpus and Pelecyphora. In conclusion I must add that a great deal of the degree of “ sunkenness” depends on the degree of dessication which the plant has endured in importation and the extent to which the plant has recovered at the time of observation. ......... from A. Morris My Neowerdermannia came to me from Lambs at Worthing about five years ago. Its age would be hard to estimate — it could have been ten years old when I received it; I believe that it was a collected plant. I’m glad to say that it has flowered every year since acquisition. There were approximately six flowers this year; when the buds first appear they are very dark — almost black; they become a little lighter in colour as they develop and then finally one sees the cream edges to the petals. Every flower set a fruit, which appeared within a few weeks of the flowers. The fruit wall was certainly thicker than that of Rebutia but not as thick as say that of Gymnocalycium. The position of the fruit is a bit difficult to ascertain. When I removed the fruit it left a depression of an eighth of an inch or perhaps a little more, in the areole. Next year I will try and keep an eye on the fruits as they develop. ......... from P. G. Waterman In May 1970,1 obtained a plant of Neowerdermannia vorwerkii from Uhlig. It was carrot shaped, about 3ins. in diameter at the top and some Bins. long. Only the top and shoulders of the plant were green, but there were remains of areole on the uppermost 1" to 1 Vz" of the sides; to judge by the colour of this upper part, which was just about the same dirty brown as the rest of the thick tapering root, only the very uppermost green part had been above ground level and the sides (on which there were the remains of some areoles) had been below the ground. The plant established itself very quickly indeed. It had to be kept indoors whilst the greenhouse was being erected and it produced one flower whilst in the house, very soon after receipt. It flowered again in about March-April time, the following year. There was a Gymnocalycium out in flower at the same time and I crossed the flowers of Neowerdermannia with the Gymno; two pods were set on the Neowerdermannia. The fruit was a green fat berry, set well down in the areole, right in the axil of the tubercle. Indeed one of the features of this plant is the position of the areoles, which are close to the axil between tubercles and not on the tip of the tubercles. ......... from R. Moreton Neowerdermannia worwerkii certainly flowers quite well, though not I think every year. I have never set fruit on it, although I do not normally cross pollinate plantsjust to see the fruits. Perhaps I shall have to start. The flowers are certainly not very spectacular — dark brown pointed buds, followed by whitish flowers with dark midstripe, only about 7mm tall and wide. Neowerdermannia chilensis flowered for the first time last year — it was an import from Frau Winter in 1963. Its flower is somewhat larger and more yellow in colour. Does anyone manage to grow these from seed, successfully? They must need very intense light as they always look eteliolated with me and eventually peter out. 3 ......... from J. Medway When I was over in Peru in late 1975 I picked out a couple of plants of Neowerdermannia from Karel Knize’s nursery; one was N. peruviana and the other was N. gielsdorfiana. Unfortunately I have no idea whereabouts they were collected. The N. gielsdorfiana was the slower of the two to settle down and even in two years there was very little new growth from the centre. The body was about 60mm. across, excluding spines, in the form of an inverted top from the body through to the root. The illustration in the Argentinian Society’s "Cactaceas” by A. Castellanos of N. vorwerkii is about it, although my plant is not quite so regular in taper. There are few spines, the lower one on each areole is strongly hooked, the remainder straight to slightly curved. The Neowerdermannia gielsdorfiana produced a number of flowers in 1977; I have taken a slide which is fairly accurate on flower colour — pinky mauve would you call it? The margins ofthe petals were a very pale pink. With the approach of Autumn I felt it was time to remove the flower remains and was surprised to find that there was some 27 seeds in a cavity above the areole; I have taken a slide of the seeds in situ on the plant. I certainly did not expect to find any seeds on the plant as I did not notice any seed pod before removing the dead flower remains. As the seeds and the fruit body are buried in a cavity above the areole I would probably not have been able to see whether there was a fruit there before removing the flower remains. I would certainly have taken more care had I known. As it was I merely pulled the dead flower gently away dispersing some of the seed as I did so. After taking the slide some days later, I removed the seed very carefully from the caviety and also a thin dry skin, which was the fruit wall. Next year, if I get a repeat performance, I will proceed with more caution. Having returned home with both plants in the November of 1975,1 cautiously began to water both plants in the Spring of 1976. The plant of N. peruviana plumped up nicely. Great cavities opened up in about six places behind the areoles around the top of the plant, which exposed round about 100 seeds which had not previously been discernible. I sowed about 40 of these myself but only one germinated and that lasted only a month before rotting off at the root. This was my only attempt at germinating this genus. However, I have the seed collected from the N. gielsdorfiana; I have also ordered N. peruviana, chilensis and sp. nov. from K.K. (which are offered as Weingartial). Tojudge by Roger Moreton’s comments it doesen’t look very hopeful, but I intend having a serious go and raising seeds of this genus.
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