| 词条 | Itea virginica |
| 释义 |
| name = Virginia sweetspire | image = Itea virginica flowers 001.JPG | image_caption = Flowering branch | genus = Itea | species = virginica | authority = L. }}Itea virginica, the Virginia sweetspire or Virginia willow, is a species of flowering plant in the family Iteaceae (formerly Saxifragaceae), native to the southern United States and particularly associated with Virginia.[1] DescriptionItea virginica is a deciduous shrub growing to {{convert|2.5 |m|ft|abbr=on}} tall and {{convert|1.5 |m|ft|abbr=on}} broad, with alternate, simple leaves on arching stems. The flowers are white or cream, borne in downward pointing slightly curved spikes, in summer. It is a multistemmed, suckering and colonizing plant, with the stems branching infrequently except at the tops. In favourable conditions it may become semi-evergreen. The leaves turn shades of red in fall (autumn). It is hardy down to at least {{convert|-15 |C|F|abbr=on}}.[2]In cultivation in the UK the cultivar ‘Henry’s Garnet’ has gained the Royal Horticultural Society’s Award of Garden Merit.[3][4] References1. ^{{cite web | url = http://hort.uconn.edu/detail.php?pid=223 | title = Itea virginica | publisher = UCONN (University of Connecticut) Plant Database| accessdate = 14 March 2018}} 2. ^{{cite book | editor-last = Brickell | editor-first = Christopher | title = The Royal Horticultural Society A-Z Encyclopedia of Garden Plants | year = 2008 | page = 582 | publisher = Dorling Kindersley | location = United Kingdom | ISBN = 9781405332965}} 3. ^{{cite web | url= https://www.rhs.org.uk/Plants/118050/i-Itea-virginica-i-Henry-s-Garnet/Details| title = RHS Plantfinder - Itea virginica ‘Henry’s Garnet’ | accessdate=13 March 2018}} 4. ^{{cite web | url= https://www.rhs.org.uk/plants/pdfs/agm-lists/agm-ornamentals.pdf | title = AGM Plants - Ornamental | date = July 2017 | page = 56 | publisher = Royal Horticultural Society | accessdate = 14 March 2018}}
4 : Saxifragales|Flora of Alabama|Plants described in 1753|Trees of the Southeastern United States |
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