WebNothotsuga longibracteata pollen is bisaccate with small sacs that are variable in size and shape (van Campo-Duplan 1950). Monosaccate Tsuga pollen differs among species in overall size, the size of the fringe, and certain aspects of surface structure ( van Campo-Duplan 1950 ; Ueno 1957 ). WebBristlecone hemlock (Nothotsuga longibracteata). Due to intensive logging, it is estimated that the population of bristlecone hemlock has declined by 30%. In China, the species is listed as Vulnerable, while its global status is …
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WebNothotsuga longibracteata[ 2] är en tallväxtart som först beskrevs av Wan Chun Cheng, och fick sitt nu gällande namn av H. H. Hu och Christopher Nigel Page. Nothotsuga longibracteata är ensam i släktet Nothotsuga som ingår i familjen tallväxter. [ 3][ 4] Inga underarter finns listade i Catalogue of Life. [ 3] Arten förekommer glest fördelad i Kina. WebFeb 15, 2024 · W.C.Cheng did not clearly indicate the herbarium repository of the type specimen ( Y.Tsiang 7712 ) when he described Tsuga longibracteata W.C.Cheng. Later, researchers suggested that the type is either in NAS or in PE. However, we found more than one duplicate of the type collection in b … chinese takeaway in braintree
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http://curator.phytoimages.siu.edu/taxpage/0/genus/Tsuga.html WebNothotsuga longibracteata has a narrow ecological niche and a scattered, fragmented distribution. Past logging and general deforestation has had an impact on this naturally rare species and it is likely that this reduction is close to the thresholds for listing as threatened. The plant is classified as 'Near Threatened' in the IUCN Red List of ... WebMuita havupuita, jotka kasvavat samoilla metsäalueilla, ovat kiinanhemlokki (Tsuga chinensis), mäntylaji Pinus fenzeliana ja Nothotsuga longibracteata. Suojelu. Cathaya argyrophylla esiintyy vain hyvin suppealla ja hajanaisella alueella. Lisäksi lajin luonnonvaraisen kannan uskotaan käsittävän vain alle tuhat yksilöä, mahdollisesti alle ... grandview mobile home park napa ca