【科普】d毛和s毛之间的过渡种desmetii

Ceph

最近交易版不少卖家都把desmetii直接标成了d毛（一般意义上的d毛都是指depressum，这个品种一般认为比较难发芽，我今年也是第一次播，10粒原包下来发了3颗，1颗太小的没几天就化掉了。d毛下面有两个亚种：ssp. depressum寿命较短，开花后即枯萎，但可自花授粉。一般多数玩家手上的d毛都是ssp. perdurans这个亚种，寿命更长，但不可自花授粉），多少有误导的嫌疑。那么到底desmetii是什么东东呢。


这是TS大神网站的图片，相关说明我也贴下：
Continuing         with the theme of disjunct populations, the next cono to be discussed is a         form of C. stephanii ssp. helmutii from the base of the         Koeriesberg (Khurisberg), about 25km north-east of Springbok. This was first         found by Anthony Mitchell in the 1980s but he did not see the flowers or         bring it into cultivation, so he was not aware which species it was. The         population was rediscovered by Philip Desmet around 2005 and I received a         few seeds under his number PD 3638 from which the plants shown in the photo         were grown. The nearest hitherto-known populations of C. stephanii         ssp. helmutii are at Eenriet (15km north-east of Steinkopf) and hence         about 40km distant. This constitutes a significant range extension for the         species. The plants tend to be rather slow-growing compared to other         stephanii forms and my largest examples only have about 15 heads after 7         years. Looking at the photo, one is immediately struck by the purple-brown         colour of the bodies. Most stephanii ecotypes are green, perhaps with         some purple colouration around the sides, so this makes it rather         distinctive. Such colouration can be seen in two other section Barbata taxa:        C. pubicalyx and most particularly C. depressum ssp.         perdurans; both of which can be found in an arc to the south and east of         Koeriesberg. In fact, Steve Hammer has told me that there is a population of        perdurans that is just a couple of kilometres from the berg. PD 3638         therefore seems to be an ecotype from the area where helmutii meets        perdurans and it is tempting to suggest that it is intermediate         between the two species. The flower colour of Eenriet stephanii and        perdurans is the same copper-orange so no clues from that feature.         The bodies of PD 3638 tend to be wider than tall, but do not have the         flatness of perdurans. Most significantly, the hairs (trichomes) on        stephanii stand out from the body but they tend to lie over the body         in perdurans; PD 3638 has them standing out. I am therefore happy to         include this local form within C. stephanii ssp. helmutii but         there might be some introgression from perdurans with regards to the         body colour。
原文太长，我挑几句重要的翻下：产地主要是Koeriesberg。生长速度比s毛慢，球体直径大于高度，比s毛更加矮胖，但不具备d毛的扁平顶部。体表的毛和s毛一样，是立起来的，而不像d毛一样是躺平的。TS大神倾向于将其归到s毛下面。

自动凡心

好贴，支持

过客~匆匆

学习了 秋天播播看

养花大叔

多谢科普，最近播了desmetii半包，第一次播，留了10粒等秋天

冰山雄鹰

希望多一些这样的科普贴字

毒家卫士

看见过大佬的d毛很可爱是平头

果拿

学习了 感谢老师科普 d毛种子太贵了 就。。不买了哈哈哈

伊甸暖阳

科普贴，不错，涨姿势了

Ceph

这是不是个坑 发表于 2019-1-14 22:05
学习了  播了s毛 一个没出十来天了，凉凉了

我也是和毛球类的八字不合，之前各种mesa的10粒原包一脱后0存活，这次mesa的40粒的s毛原包也是一样惨，本来就发的不太好，发了大约一半吧，还一个挨着一个化水了。但有些玩家就反映毛球类的很好发芽很好带大。。。。

tiantangniao

多一些这样的帖子就好了