D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp


Salix rotundifolia Trautv.
LEAST WILLOW
Life   Plantae   Dicotyledoneae   Salicaceae   Salix


Click on map for details about points.

IDnature guide

Links
go to Discover Life's Facebook group

Following modified from Plants Database, United States Department of Agriculture
   Top | See original

http://plants.usda.gov/java/profile?symbol=SARO2 ---> https://plants.usda.gov/java/profile?symbol=SARO2
https://plants.usda.gov/java/profile?symbol=SARO2 ---> http://plants.usda.gov/core/profile?symbol=SARO2
http://plants.usda.gov/core/profile?symbol=SARO2 ---> https://plants.usda.gov/core/profile?symbol=SARO2
&pull 20q v5.145 20180528: Error 500 read timeout https://plants.usda.gov/core/profile?symbol=SARO2

Following modified from Flora of North America
   Top | See original

Link to Flora of North America home
 
All Floras       Advanced Search
FNA Vol. 7 Page 27, 62, 69 , 70, 74, 80, 81 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Salicaceae | Salix

31. Salix rotundifolia Trautvetter, Nouv. Mém. Soc. Imp. Naturalistes Moscou. 2: 304, plate 11. 1832.

Plants 0.005-0.05 m, (dwarf), forming clones by rhizomes. Stems erect; branches yellow-green, yellow-brown, or gray-brown, glabrous; branchlets yellow-brown or red-brown, glabrous; branches and branchlets sometimes weakly glaucous. Leaves (marcescent but not skeletonized), stipules usually absent or rudimentary, rarely present on late ones; petiole (convex, or shallowly to deeply grooved, flat), 0.4-4.6(-5.5) mm, (glabrous adaxially); largest medial blade (2 pairs of secondary veins arising at or close to base, arcing toward apex) broadly elliptic, subcircular, or circular, 1.9-16.3 × 3-10.5 mm, 0.84-1.17(-2.53) times as long as wide, base rounded or convex, margins flat, entire, ciliate, apex retuse, rounded, convex, or acute, abaxial surface glabrous, adaxial highly glossy, glabrous; proximal blade margins entire; juvenile blade glabrous or puberulent. Catkins from subterminal buds; staminate subglobose, stout, or indeterminate, 3.3-18.5 × 2.5-12 mm, flowering branchlet 0.5-9 mm; pistillate moderately densely to loosely flowered (2-15 flowers), stout, subglobose, globose, or indeterminate, 4.5-35 × 2-17 mm, flowering branchlet 0.5-22 mm; floral bract brown, 1.6-2.8 mm, apex rounded or retuse, entire, abaxially sparsely hairy or ciliate, hairs usually wavy, crinkled or curly, rarely straight. Staminate flowers: abaxial nectary 0.5-1 mm, adaxial nectary narrowly oblong or oblong, 0.8-1.4 mm, nectaries distinct; filaments distinct or connate less than 1/2 their lengths, glabrous; anthers ellipsoid or globose, 0.4-0.6 mm. Pistillate flowers: abaxial nectary present or absent, adaxial nectary usually narrowly oblong or oblong, sometimes flask-shaped, 0.8-2 mm, longer than stipe; stipe 0.4-0.8 mm; ovary pyriform, glabrous or puberulent, (hairs in patches, especially on beak), beak slightly bulged below styles; ovules 7-17 per ovary; styles connate or slightly distinct distally, 0.5-1 mm; stigmas flat, abaxially non-papillate with pointed tip, or slenderly or broadly cylindrical, 0.28-0.6 mm. Capsules 3.8-8.3 mm.

Varieties 2 (2 in the flora): North America, e Asia.

Updated: 2019-10-13 22:19:48 gmt
Discover Life | Top
© Designed by The Polistes Corporation