Localities documented in Tropicos sources
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
- SPECIMEN BASED RECORD. Published protolog data. http://www.tropicos.org/Reference/9990002
- Farjon, A. K. & B. T. Styles. 1997. Pinus (Pinaceae). Fl. Neotrop. 75: 1–291. http://www.tropicos.org/Reference/1010427
- Farjon, A. K., J. A. Pérez de la Rosa & B. T. Styles. 1997. Field Guide Pines Mexico Central America 1–147. Royal Botanic Gardens, Kew. http://www.tropicos.org/Reference/100000294
- Perry, J. P. 1991. Pines Mex. Centr. Amer. 1–231. Timber Press, Portland, Oregon. http://www.tropicos.org/Reference/39009
Catalog Number: US 398615
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Card file verified by examination of alleged type specimen
Preparation: Pressed specimen
Collector(s): E. W. Nelson
Year Collected: 1898
Locality: Miquihuana., Tamaulipas, Mexico, North America
Elevation (m): 1829 to 2134
- Holotype: Shaw, G. R. 1904. Gard. Chron. ser. 3. 36: 122.
Habitat and Ecology
Molecular Biology and Genetics
Barcode data: Pinus nelsonii
No available public DNA sequences.
Download FASTA File
Statistics of barcoding coverage: Pinus nelsonii
Public Records: 6
Specimens with Barcodes: 15
Species With Barcodes: 1
IUCN Red List Assessment
Red List Category
Red List Criteria
- Needs updating
- 1997Rare(Walter and Gillett 1998)
Pinus nelsonii (Nelson's Pinyon), is a species of pine native to the mountains of northeastern Mexico, in Nuevo León, San Luis Potosí and Tamaulipas at 1,800–3,200 m altitude. It has very singular characteristics and is not closely related to any other pines in either morphology or genetics. It is placed in subgenus Strobus either in its own section Nelsonia or subsection Nelsoniae.
"Pinus nelsonii is exceptional. Evidence from three nuclear genes (Syring et al., 2005) and cpDNA (Gernandt et al., 2005) resolve P. nelsonii as sister lineage to the remaining members of sect. Parrya. In contrast, the LEA-like locus used in this study places P. nelsonii in a unique, moderately supported (71% BS) position sister to sect. Quinquefoliae when midpoint rooting is employed."
It is a small tree growing to 10 m tall with a trunk up to 20–30 cm diameter. The crown is rounded and dense, and resembles that of the unrelated Pinus pinea from the western Mediterranean. The needles are produced in fascicles of three (occasionally four), but 'zipped' together in apparent single fascicles which can only be separated by force. They are 4–8 (rarely 10) cm long and 0.7–1 mm thick, sub-shiny dark green in colour, with a persistent grey basal sheath 7–9 mm long. The cones are cylindrical, 6–12 cm long and 4–5 cm broad, orange-brown to red-brown colour, with 60–100 scales with large but indistinct umbos, and carried on a stout downcurved peduncle 3–6 cm long. Unlike all other pines, their growth while immature does not pause during the first winter. The seeds are large, 12–15 mm, red-brown. The cones mature in November after rain season. It grows in a semi-arid temperate climate with summer rainfall and is very drought-tolerant.
The seeds are edible and delicious and are very appreciated by people in the region and are so valuable that they are transported to the markets of Mexico City. Because of its seeds it has been very devastated by people. Only recently it has been cultivated outside its native range, grown more for its botanical curiosity than for ornamental values.
- Conifer Specialist Group 1998. Pinus nelsoni. 2006 IUCN Red List of Threatened Species. Downloaded on 10 July 2007.
- Shaw, G. R. (1904). Pinus nelsonii. Gard. Chron. ser.3, 36: 122, f.49.
- Businsky, R. (2008). "The Genus Pinus L., Pines". Acta Pruhoniciana 88: 1–128.
- Grimshaw, J., & Bayton, R. (2009). New Trees. International Dendrology Society / Kew. ISBN 978-1-84246-173-0.
- Gernandt, D. S.; López, G. G.; García, S. O.; Liston, A. (2005). "Phylogeny and classification of Pinus". Taxon 54 (1): 29–42. doi:10.2307/25065300. JSTOR 25065300.
- Syring, J. et al. (2007). "Widespread Genealogical Nonmonophyly in Species of Pinus Subgenus Strobus". Syst. Bot 56 (2): 163–181.
- Farjon, A. & Styles, B. T. (1997). Pinus (Pinaceae). Flora Neotropica Monograph 75. ISBN 0-89327-411-9
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