Apocynaceae GH: 02179292 Apocynum androsaemifolium Linnaeus USA: California Skylone Boulevard, Oakland Hills H. L. Mason 7071 1932-5-6
Asteraceae GH: 02141537 Agoseris heterophylla (Nuttall) Greene USA: California [data not captured] H. L. Mason 6980 1932-4-24
GH: 02141644 Agoseris heterophylla cryptopleura (Nuttall) Greene USA: California [data not captured] H. L. Mason 7000 1932-4-25
GH: 02141881 Anisocoma acaulis Torrey & A. Gray USA: California [data not captured] H. L. Mason 6897 1932-4-2
GH: 00427010 Eriophyllum lanatum grandiflorum (A. Gray) Jepson USA: California Mokulmne River Bridge, Comanche H. L. Mason 6976 1932-4-24
GH: 00427297 Lembertia congdonii (A. Gray) Greene USA: California Five miles east of Lost Hills H. L. Mason 6912 1932-4-3
GH: 01835893 Microseris douglasii (de Candolle) Schultz Bipontinus USA: California [data not captured] H. L. Mason 6832 1932-3-19
GH: 00427297 Monolopia congdonii (A. Gray) B. G. Baldwin USA: California Five miles east of Lost Hills H. L. Mason 6912 1932-4-3
Boraginaceae GH: 00424612 Amsinckia douglasiana de Candolle USA: California Road from Mountain House to Midway, west of ... H. L. Mason 6815 1932-3-19
GH: 01956429 Amsinckia intermedia Fischer & C. A. Meyer USA: California Road from Mountain House to Midway, west of ... H. L. Mason 6813 1932-3-19
GH: 01956510 Amsinckia intermedia Fischer & C. A. Meyer USA: California Road from Mountain House to Midway, west of ... H. L. Mason 6814 1932-3-19
GH: 00424701 Cryptantha circumscissa (Hooker & Arnott) I. M. Johnston USA: California One mile east of Lancaster, Mojave Desert H. L. Mason 6868 1932-4-1
Brassicaceae GH: 00422484 Tropidocarpum capparideum Greene USA: California Road from Mountain House to Midway, west of ... H. L. Mason 6818 1932-3-19
Ericaceae GH: 00350160 Arctostaphylos columbiana Piper USA: California Trinidad Head H. L. Mason 7104 1932-7-21
GH: 00350825 Arctostaphylos nummularia A. Gray USA: California Pine Barrens at Mendocino City H. L. Mason 7167 1932-8-26
Fabaceae GH: 00366282 Astragalus hornii A. Gray USA: California Five miles east of Lost Hills H. L. Mason 6915 1932-4-3
GH: 02342919 Trifolium gracilentum Torrey & A. Gray USA: California [data not captured] H. L. Mason 6844 1932-3-20
Malvaceae GH: 00420707 Sidalcea hartwegii A. Gray USA: California Near base of Pilot Hill about 11 mi. E. of F... H. L. Mason 1932-4-24
Plantaginaceae GH: 00466877 Callitriche marginata Torrey USA: California [data not captured] H. L. Mason 6852 1932-3-20
GH: 00466883 Callitriche marginata Torrey USA: California [data not captured] H. L. Mason 6810 1932-3-16
GH: 00466889 Callitriche marginata Torrey USA: California [data not captured] H. L. Mason 6807 1932-3-6
GH: 02212758 Callitriche sp. USA: California [data not captured] H. L. Mason 6801 1932-3-1
GH: 02212751 Callitriche sp. USA: California [data not captured] H. L. Mason 6802 1932-3-1
Poaceae GH: 00360099 Koeleria cristata Persoon USA: California Laundry farm, Oakland Hills H. L. Mason 7051 1932-4-28
GH: 00341837 Vulpia microstachys ciliata (A. Gray ex Beal) Lonard & Gould USA: California Laundry farm, Oakland hills H. L. Mason 7066 1932-5-4
Polemoniaceae GH: 00091310 Linanthus bakeri H. Mason USA: California Pilot Hill H. L. Mason 7015 1932-4-25
Primulaceae GH: 00424256 Androsace elongata acuta (Greene) G. T. Robbins USA: California two miles east of Midway H. L. Mason 6820 1932-3-19
Rhamnaceae GH: 00425422 Ceanothus tomentosus Parry USA: California 3 miles south of Ione H. L. Mason 6986 1932-4-24
GH: 00425973 Frangula californica occidentalis (Howell ex Greene) Kartesz & Gandhi USA: California East slope of Southfork Mountains, on road f... H. L. Mason 7109 1932-7-21
GH: 00425973 Rhamnus californica occidentalis (Howell ex Greene) C. B. Wolf USA: California East slope of Southfork Mountains, on road f... H. L. Mason 7109 1932-7-21
Rosaceae GH: 00345641 Horkelia parryi Greene USA: California Three miles south of Ione H. L. Mason 6978 1932-4-24
GH: 00346914 Malus fusca (Rafinesque) C. K. Schneider USA: California Big Lagoon H. L. Mason 7101 1932-7-21
GH: 00346914 Pyrus rivularis Douglas ex Hooker USA: California Big Lagoon H. L. Mason 7101 1932-7-21
