IYCES: 
—Howitt and Howell 1964 (Calif.) . 
rene B. Newcomb 1962. Geographic variation 
cata Lemm. Ph. D. thesis, Univ. Calif., Berke- 
917 pps) ulus: 
rlished—B. K. Ford 1963 (Oreg.); J. F. Franklin 
reg.); J. R. Griffin 1963, 1964 (Calif.); J. L. Jenkin- 
; O. V. Matthews 1964 (Oreg.); R. B. Vasey 1963 
Pinus muricata D. Don MAP 59 
bishop pine 
Pinus muricata D. Don, Linn. Soc. London Trans. 
17: 441. 1836. 
Included here are Pinus remorata Mason and P. muricata 
var. cedrosensis Howell, although the status of the latter pine 
in particular is uncertain (Fielding 1961). Bishop pine, an 
extremely variable species complex, occurs in seven rather 
widely separated localities on the coast of California and 
northern Baja California, and on three islands situated 15 to 
30 miles offshore. Its distribution may overlap that of the 
closely related P. attenwata near the coast of Mendocino 
County, Calif., and the two species grow less than 10 miles 
apart in the vicinity of San Luis Obispo, Calif. On the 
Monterey peninsula near Monterey, Calif., P. muricata is 
associated with P. radiata, and natural hybrids have been 
observed (Stebbins 1950, p. 209). A reported occurrence of 
P, muricata near Crescent City, Calif., based on a single tree 
found in the coastal forest, is not shown on the map (Mason 
1949; H. L. Mason, personal communication, 1964) . 
Additional sources: 
Published—Epling and Robison 1940 (Baja Calif.) ; 
Howell 1949 (Calif.); Mason 1949 (Calif.); W. Metcalf 1921 
(Calif.); Muller 1962 (Baja Calif.). 
Theses—John W. Duffeld 1951.  Interrelationships of 
the California closed-cone pines with special reference to 
Pinus muricata D. Don. Ph.D. thesis, Univ. Calif., Berkeley, 
Calif, 77 pp. illus.; George O. Hale 1941. A survey of the 
vegetation of Cedros Island, Mexico. M.A. thesis, Univ. 
Calif., Los Angeles, Calif., 96 pp., illus. 
Unpublished—E. R. Blakley 1961 (Santa Cruz and Santa 
Rosa Islands); W. J. Libby 1964 (Cedros Island); P. Zinke 
1961 (Calif.) . 
Pinus patula Schiede & Deppe MAP 60 
Mexican weeping pine 
Pinus patula Schiede & Deppe in Schlecht. & Cham., 
Linnaea 6: 354. 1831. 
Pinus patula is restricted to eastern Mexico from Tamau- 
lipas to Oaxaca. Its presence in Tamaulipas was reported 
only recently (Hernandez X. et al. 1951). 
A variant in Chiapas referred tentatively to var. longi- 
pedunculata Loock may be identical with P. oocarpa var. 
ochoterenai Martinez (E. L. Little, Jr., 17957, 10 km. S. E. of 
San Cristobal de Las Casas: B. Hallberg, personal communica- 
tion, 1964). The range of the Chiapas highlands pine is 
shown separately on Map 61. 
Additional sources: 
Published—Hernandez X. et al. 1951 
1949 (Hgo.). 
Unpublished—B. Hallberg 1964 (Oax., Chis.). 
(Tamps.); Wicht 
Pinus greggii Engelm. MAP 60 
Gregg pine 
Pinus greggii Engelm. ex Parl. in DC., Prodr. 
16 (2). 396. 1868. 
This uncommon species‘is confined to eastern and north- 
eastern Mexico from southeastern Coahuila to Hidalgo. Its 
range overlaps that of the closely related Pinus patula in 
eastern Hidalgo. 
Additional sources: 
Published—Johnston 1943 (Coah.) . 
Unpublished—J. W. Andresen 1964 (N.L.); E. Larsen 
(Hgo.); F. Medellin-Leal 1964 (S.L.P.). 
Pinus oocarpa Schiede MAP 61 
Pinus oocarpa Schiede in Schlecht., Linnaea 12: 491. 1838. 
One of the most widespread Latin American pines, Pinus 
oocarpa ranges in Mexico from Sonora southeast to Hidalgo 
and Chiapas, and in Central America east and south to 
British Honduras and northwestern Nicaragua. It grows at 
relatively low elevations, and extends farther south than any 
other American pine except P. caribaea. P. oocarpa var. 
ochoterenai Martinez is shown separately because of its un- 
certain status (see P. patula). 
Pinus tecumumani of Guatemala, which was proposed 
without a Latin diagnosis by Schwerdtfeger (1953), is con- 
sidered by Standley and Steyermark (1958) a variant of P. 
oocarpa, and is not shown separately on the map. 
Additional sources: 
Published—Denevan 1961 (Nicaragua); Gentry 1946 
(Sin.) ; Goldman 1951; Hunt 1962 (British Honduras) ; Lauer 
1959 (Honduras) ; Loock 1950 (Mich.); Miranda 1961 (Chis.); 
Schwerdtfeger 1953 (Guatemala); Shaw 1909; Standley and 
Steyermark 1958 (Guatemala); Vogel 1954 (Honduras); Wag- 
ner 1962 (Chis.). 
Thesis—Carl L. Johannessen 1959. The geography of 
the savannas of interior Honduras, Ph.D. thesis, Univ. Calif., 
Berkeley, Calif., 283 pp., illus. 
Unpublished—C, E. Blanco 1964 (Dgo.); B. Hallberg 
1964 (Oax., Chis.) ; E. Larsen 1962; N. Sanchez Mejorada to 
L. W. Bryan 1963 (Mich.); M. D. Moore 1963 (EI Salvador) ; 
O. Zarzosa L. 1964 (Dgo.). 
Pinus pringlei Shaw MAP 61 
Pringle pine 
Pinus pringle: Shaw in Sarg., Trees and Shrubs 
1: 211, t. 100. 1905. 
This distinctive low-elevation pine is confined to southern 
Mexico, ranging from Michoacan to Puebla and Oaxaca. It 
is sometimes associated with the related Pinus oocarpa. 
Additional sources: 
Published—Shaw 1909; Loock 1950 (Mich.). 
Unpublished—Hallberg 1964 (Oax.); Larsen 1962 
(Mex.). 
