Prometheum typhaeum 点滴莲

TYMPHAEUM (Quézel & Contandriopoulos) 't Hart, 1995 点滴莲
Synonym :
异名:
Sedum thymphaeum Quézel & Constandriopoulos (1967)
Distribution : Nothern Greece; mountains, on rocks in crevices, limestone, 2000 – 2200 m, rare endemic and only known from 3 or 4 mountain tops.
Description (according to IHSP, 2003) :
Perennials, densely covered with minute glandular hairs, sticky.
Rosette globose, forming offsets on short axillary stolons.
Leaves oblong-obovate to spatulate, flattened, 10 – 12 x 3 – 4 mm .
Inflorescence axillary, ascending or erect, 5 – 8 (-10) cm, generally as few-flowered corymbose cymes with 2 – 3, sometimes forked, cincinni, pedicels to 8 mm,
Flowers : Sepals basally slightly connate, oblong , 3 – 4 mm, petals 7 – 9 mm, basally conate, with broadly ovate-elliptic, acute, 3 – 4 mm wide , white or sometimes tinged with red, filaments white, anthers red, styles ± 1 mm, fruits stellate-patent, yellowish-brown, with distinct paler (whitish) lips along the sutures, seeds ovoid, brown.
Cytology : 2n = 14
Formely included in Sedum, but closely related to the monocarpic P. pilosum and P. sempervivoides.
The 3 species can be easily hybridized, but their hybrids are completely sterile ('t Hart & al. 1999).
分布:北希腊;山,岩石上的裂缝,石灰石,2000–2200米地区,十分稀有,且仅在3-4座山峰有分布.
描述(根据IHSP,2003):
多年生草本,密被小腺毛,有粘性.
莲座结形成球状,匍匐茎短腋生侧芽.
叶片长圆状倒卵形的到匙形,扁平,10–12 x 3–4毫米.
花序腋生,上升或直立,5–8(－10)厘米,通常是少花的伞房状聚伞花序2–3支.有时分叉,蝎尾状聚伞花序,花梗到8毫米长.
花:萼片长圆形.基部稍合生.3–4毫米.花瓣7–9毫米.基部合生,有时为宽卵形椭圆形,急尖,宽3–4毫米,白色或有时微染红色,花丝白色,花药红色,±1毫米,星状的种荚,黄棕色,有明显的苍白(白色)唇沿缝线,种子卵球形,棕色.
染色体:2n＝14
之前被分于景天属(Sedum)名下,但与一果植物P. pilosum ,P. sempervivoides有紧密的关系.
上述三种品种可以进行杂交,但杂交种完全不育.