長柄毛氈苔群(北嶺地毛氈苔)

http://www.sarracenia.com/faq/faq5255.html 

Q: The "petiolaris-complex"

長柄毛氈苔群(北嶺地毛氈苔)

A: This group of sundews consists of very closely related rosetted species that live in very warm, seasonally moist areas. Since their habitat is largely tropical, the seasonal variation seems to be more firmly dependent upon the wet-dry season than temperature changes. All except D. petiolaris are restricted to Australia.

這類由親緣相近的蓮座型毛氈苔，生長在非常溫暖的季節性濕地。由於原生地大多在熱帶，乾季與旱季的變動相對於溫差造成的季節差異更為重要。除了長柄毛氈苔 (D. petiolaris)外，其餘分布僅拘限澳洲大陸。

In the wild, these plants have been observed to hybridize, which complicates identifications.

目前觀察到這些植物可進行自然的雜交，因此增加辨識上的複雜度。

Now, I must preface my following statements with a disclaimer: I have never seen these plants in the wild, and perhaps in the wild the segregation of the plants into clearly defined populations is entirely obvious. However, I must say that some of the species in this group seem very weakly separated from each other. I suspect that some field workers might easily interpret these species as merely populations of a larger, more variable species. If you think I am wrong, please send me a check for US$2500 or so, so I can visit Australia and make my own evaluations. Actually, double that because my wife will want to come along too. The same kinds of arguments can be made about South African Drosera, too, so there is plenty of interestingg room for research in this genus.

在前言之前我必須發表一項免責聲明(XD)：我沒有到野外看過這些植物，也許這些植物的隔離程度大到可定義成群族是非常明顯的。然而我必須說在這群植物的某些種類實在很難互相區別。我懷疑某些野生地工作者能輕易理解這群廣大具變化性的植物物種。假如你認為我是錯的，請給我2500USD以便我去澳洲評估。(XDDDDDD)事實上你還在給我2倍，我妻子也要去。相同爭議也出現在南美毛氈苔中，因此該屬也有許多有趣的空間來研究。

One species in this group, Drosera falconeri, really sticks out as an oddity. Unlike the other plants in the petiolaris-complex, this plant has large leaf blades. This plant looks like a sundew doing its best impersonation of a Venus flytrap. It is quite bizarre. Despite these morphological characteristics, this plant can hybridize with the other plants in the complex!

在這類群族中，有個名符其實的怪胎大肉餅毛氈苔 (Drosera falconeri)。不像其他長柄毛氈苔群，具有非常寬的葉柄。植物像是一顆毛氈苔模擬一株捕蠅草。十分的奇怪。儘管具有特殊的型態特徵，該種人可與這群植物的其他物種雜交!

Drosera banksii, while classified in the genus section Lasiocephala (i.e. the "petiolaris-complex") is almost certainly misclassified, so I deal with it elsewhere.

Drosera banksii被分類於Lasiocephala(長柄毛氈苔群, the petiolaris-complex)似乎是個明確錯誤，因此我在這處理了它。

Growing these plants has mostly been a frustrating experience for me. In Arizona I grew them in a hot, extremely bright greenhouse and did well with them. However, propagation was difficult. I was never successful with leaf cuttings, and was only able to vegetatively propagate them by division when the plants naturally clumped. But even that was hard. Also, during the dry season the plants would enter a dormancy during which I incurred significant losses. However, looking back at my efforts back then, I see some foolish mistakes that I made. I should try to grow these plants again, as I think they should be pretty straightforward.

對我來說種植這類植物是個沮喪的經驗。我在亞利桑那州種植在很熱且很明亮的溫室，種植效果不錯。但對於該植物繁殖上很困難。我從來沒有成功的葉插，只從自然叢生的植株分株。即使這非常困難。此外在乾季植物進入休眠時我常招致嚴重的損失。然而我回頭看我的成果，發現到我犯了很愚蠢的錯誤。我想我應該再來嘗試種植這些植物，我想它們種植起來應該是相當簡單的。

The easiest plants in this group to grow, in my experience, are Drosera paradoxa, D. petiolaris, and D. ordensis. The hardest, unfortunately, is Drosera falconeri. During dormancy these plants regress slightly to a smaller rosette or, in some cases, something more like a hibernating bud. Drosera falconeri can turn into a very tight bud that feels like a bulb. I recommend growing them in a mix of peat:sand (1:1), or peat:aggregate (1:1) where the aggregate can be perlite, pumice, or gravel.

依我經驗，該類群植物中最好種的為孔雀毛氈苔 (Drosera paradoxa)、長柄毛氈苔 (D. petiolaris)及寬葉銀毛氈苔 (D. ordensis)。令人不幸的是最難種的為大肉餅毛氈苔 (Drosera falconeri)。在休眠期中這類植物會縮退成小小蓮座，或在某些情況產生類似於休眠芽的結構。但大肉餅毛氈苔會產生非常堅硬的芽，型態看起來像一個球根。我建議這類植物介質以泥炭及沙一比一調製或以泥炭和不透水介質如珍珠石、浮石及碎石一比一混合。

Unfortunately, and perhaps because of the difficulty in vegetative propagation, a large number of the plants in horticulture (at least in the USA) are hybrids between the species. Since the species are often weakly separated already, such intermediate (and fertile) hybrids are very difficult to figure out. However, they are vigorous in cultivation, so might make good plants for a person trying to grow them for the first time. The rarity of pure species in cultivation is probably because most will not produce seed if self-pollinated.

 不幸的是，因為這類植物很難進行無性繁殖，至少在美國中的園藝界出現大量的雜交種。即使這些植株種間的隔離性較弱，這些具有生殖能力的中間體雜交種很難搞清楚。然而這些雜交栽培種生長是強盛，很適合給第一次接觸該種植物的人來嘗試。而純種在栽培上是非常稀有的，因為該植物並不能自花授粉產生種子。

Vegetative propagation, at least of the less-hairy species, can be done via leaf pullings that are submerged in purified water until they strike. This is a very cool technique!

無性繁殖上，至少對於一些毛較少的種類，剝除整片葉子浸在純水中直到發芽。這是一個非常酷的技術!

The "petiolaris-complex"1
D. brevicornis D. broomensis D. caduca(變葉毛氈苔) D. darwinensis(達爾文毛氈苔) D. derbyensis D. dilatato-petiolaris D. falconeri(大肉餅毛氈苔)	D. fulva D. kenneallyi(小肉餅毛氈苔) D. lanata(細葉銀毛氈苔) D. ordensis(寬葉銀毛氈苔) D. paradoxa(孔雀毛氈苔) D. petiolaris2(長柄毛氈苔)
1All in Drosera sect. Lasiocephala. 2Native to Australia and New Guinea.