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Salix heartensis
Salix heartensis L.J. Hickey Mem. Geol. Soc. Amer., 150: 117. 19 Jul 1977
- Name
- Salix heartensis
- Rank
- Species
- Generic Name
- [Genus] Salix
- Authors (Pub.)
- Hickey L. J.
- Publication
- Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of Western North Dakota [1977/7]
- Journal
- Memoirs of the Geological Society of America
- Volume
- 150
- Page number
- 117
- Year
- 1977
- Fossil Status
- leaves
- Stratigraphy
- Thanetian
- Location
- White Butte, Stark County, North Dakota, USA
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- National Museum of Natural History, Smithsonian Institution, Washington, USA
- Repository Number
- USNM 43168
Data for Paratypus
- Repository
- National Museum of Natural History, Smithsonian Institution, Washington, USA
- Repository Number
- USNM 43169 [pl. 13: 5], 43170; PU 20062
- Diagnosis
- Leaf linear, approximately 4 to 5.9 cm; 3 to 5 mm, apex attenuate, base acute; margin entire or marked with very small, distant, glandular serrations; petiole missing; texture chartaceous or perhape membranaceous. Venation pinnate, brochidodromous; midvein stout and slightly curved with more than 20 pairs of thin secondaries diverging from it at angles between 80° and 85°; secondaries strongly brochidodromous, forming a well-defined intramarginal vein where they join; the loop-forming branch joins the superadjacent
secondary vein at an obtuse angle, lies close to the margin, and is partially enclosed by outer veins. Tertiary veins of random course and nonuniform in their angles of origin; thinner than the secondaries and not well differentiated from the higher order venation. Areolation very fine, 0.3 to 0.6 mm across, equant, irregular in shape with no freely ending veinlets.
