Apiaceae GH: 00424320 Oreonana vestita (S. Watson) Jepson USA: California Old Baldy H. L. Mason 3769 1927-6-15
Apocynaceae GH: 02115312 Cycladenia humilis venusta (Eastwood) Woodson ex Munz USA: California Cirque slide south of Baldy, San Gabriel Mts H. L. Mason 3782 1927-6-15
Asteraceae GH: 00386519 Brickellia californica (Torrey & A. Gray) A. Gray USA: California Canyon back of Prisoners harbor. Santa Cruz ... H. L. Mason 4083 1927-9-23
GH: 02142575 Crepis capillaris (Linnaeus) Wallroth USA: Washington [data not captured] H. L. Mason 3954 1927-7-14
GH: 01831268 Hieracium albiflorum Hooker USA: Washington [data not captured] H. L. Mason 3817 1927-7-7
GH: 01834737 Lactuca saligna Linnaeus USA: California [data not captured] H. L. Mason 4113 1927-10-4
GH: 01835546 Malacothrix clevelandii A. Gray USA: California [data not captured] H. L. Mason 3748 1927-6-11
GH: 01835615 Malacothrix floccifera (de Candolle) S. F. Blake USA: California Santa Cruz: [data not captured] H. L. Mason 4001 1927-7-31
GH: 01835728 Malacothrix saxatilis implicata (Eastwood) H. M. Hall USA: California [data not captured] H. L. Mason 4088 1927-9-24
Boraginaceae GH: 00420066 Plagiobothrys chorisiana hickmanii (Greene) Jepson USA: California Zayante Creek, Mount Hermon, Santa Cruz Moun... H. L. Mason 4013 1927-7-31
GH: 00420030 Plagiobothrys chorisianus (Chamisso) I. M. Johnston USA: California Between Pescadero Creek and La Honda H. L. Mason 3692 1927-4-23
GH: 00420066 Plagiobothrys chorisianus hickmanii (Greene) I. M. Johnstone USA: California Zayante Creek, Mount Hermon, Santa Cruz Moun... H. L. Mason 4013 1927-7-31
Campanulaceae GH: 01795750 Campanula prenanthoides Durand USA: California west end of Big Basin H. L. Mason 3977 1927-7-27
Cephaloziaceae FH: 00496155 Cephalozia bicuspidata (Linnaeus) Dumortier USA: Washington [data not captured] H. L. Mason 3931 1927-7-8
FH: 00496159 Cephalozia bicuspidata (Linnaeus) Dumortier USA: Washington [data not captured] H. L. Mason 3924 1927-7-9
FH: 00496523 Cephalozia lunulifolia (Dumortier) Dumortier USA: California [data not captured] H. L. Mason 1927-4-17
Cephaloziellaceae FH: 00496694 Cephaloziella divaricata (Smith) Warnstorf USA: Washington [data not captured] H. L. Mason 3933 1927-7-8
Convolvulaceae GH: 00872742 Dichondra donelliana Tharp & M. C. Johnston USA: California west side of Bolinas Ridge H. L. Mason 5217 1927-4-17
GH: 00872742 Dichondra repens J. R. Forster & G. Forster USA: California west side of Bolinas Ridge H. L. Mason 5217 1927-4-17
Ericaceae GH: 00362665 Arctostaphylos diversifolia (Parry) Parry ex A. Gray USA: California Along roadway through Buena Vista Canyon, Sa... H. L. Mason 4098 1927-9-25
GH: 00362159 Arctostaphylos sensitiva Jepson USA: California hills south of Mount Herman H. L. Mason 3997 1927-7-31
GH: 01536568 Arctostaphylos uva-ursi (Linnaeus) Sprengel USA: Washington Hills about Roosevelt Glacier, Mt. Baker H. L. Mason 3881 1927-7-11
GH: 01562161 Chimaphila menziesii (R. Brown) Sprengel USA: Washington from Glacier to Mt. Baker H. L. Mason 3837 1927-7-10
GH: 01562198 Chimaphila umbellata (Linnaeus) W. P. C. Barton USA: Oregon Grizzly Peak; northeast of Ashland. H. L. Mason 4071 1927-8-9
GH: 00362665 Comarostaphylis diversifolia (Parry) Greene USA: California Along roadway through Buena Vista Canyon, Sa... H. L. Mason 4098 1927-9-25
GH: 01592240 Gaultheria shallon Pursh USA: Washington North slopes of Mt. Baker H. L. Mason 3897 1927-7-12
GH: 01683402 Phyllodoce glanduliflora (Hooker) Coville USA: Washington [data not captured] H. L. Mason 3882 1927-7-11
GH: 01684893 Pyrola asarifolia bracteata (Hooker) Haber USA: Washington [data not captured] H. L. Mason 3838 1927-7-10
Fabaceae GH: 02342792 Trifolium dichotomum Hooker & Arnott USA: California [data not captured] H. L. Mason 5214 1927-4-26
GH: 02344368 Trifolium wormskioldii Lehmann USA: California [data not captured] H. L. Mason 5221 1927-4-26
GH: 02344947 Vicia americana Muhlenberg ex Willdenow USA: California [data not captured] H. L. Mason 3675 1927-4-23
Geocalycaceae FH: 00500436 Lophocolea heterophylla (Schrader) Dumortier USA: California [data not captured] H. L. Mason 1927-9-25
Hydrophyllaceae GH: 00402987 Phacelia mohavensis A. Gray USA: California Higher slopes of Mount San Antonio (Baldy) H. L. Mason 3767 1927-6-14
Jungermanniaceae FH: 00500706 Lophozia incisa (Schrader) Dumortier USA: Washington [data not captured] H. L. Mason 3938 1927-7-11
FH: 00500914 Lophozia ventricosa (Dickson) Dumortier USA: Washington [data not captured] H. L. Mason 3928 1927-7-11
Marchantiaceae FH: 00506663 Marchantia polymorpha Linnaeus USA: Washington [data not captured] H. L. Mason 3916 1927-7-11
Oleaceae GH: 00401113 Forestiera neo-mexicana A. Gray USA: California Arroyo Mocho, sixteen miles south of Livermo... H. L. Mason 3656 1927-3-20
Orchidaceae GH: 01938498 Corallorhiza mertensiana Bongard USA: Washington along trail from Glacier to Mount Baker H. L. Mason 3837a 1927-7-10
AMES: 02051363 Listera cordata (Linnaeus) R. Brown USA: Washington Mount Baker H. L. Mason 3850 1927-7-10
AMES: 02050199 Platanthera stricta Lindley USA: Washington along trail from Glacier to Mt. Baker H. L. Mason 3842 1927-7-10
Pelliaceae FH: 00508226 Pellia fabroniana Raddi USA: Washington [data not captured] H. L. Mason 3923 1927-7-11
FH: 00508227 Pellia fabroniana Raddi USA: Washington [data not captured] H. L. Mason 3920 1927-7-11
Plantaginaceae GH: 02121864 Penstemon procerus Douglas ex Graham USA: Washington [data not captured] H. L. Mason 3851 1927-7-11
GH: 02122504 Penstemon serrulatus Menzies ex Smith USA: Washington [data not captured] H. L. Mason 3827 1927-7-9
Polygonaceae GH: 00364215 Eriogonum grande Greene USA: California in gullies near West Willow Creek, Santa Cru... H. L. Mason 4094 1927-9-24
GH: 00364215 Eriogonum nudum grande (Greene) Jepson USA: California in gullies near West Willow Creek, Santa Cru... H. L. Mason 4094 1927-9-24
Ptilidiaceae FH: 00509119 Ptilidium sp. USA: Washington [data not captured] H. L. Mason 3942 1927-7-11
FH: 00509120 Ptilidium sp. USA: Washington [data not captured] H. L. Mason 3943 1927-7-11
FH: 00509121 Ptilidium sp. USA: Washington [data not captured] H. L. Mason 3917 1927-7-11
Ricciaceae FH: 00510149 Riccia crystallina Linnaeus USA: California [data not captured] H. L. Mason 1927-8-10
Rosaceae GH: 00345295 Adenostoma fasciculatum Hooker & Arnott USA: California Hills about Pelican Bay, Santa Cruz Island H. L. Mason 4107 1927-9-25
GH: 01587573 Cercocarpus montanus blancheae (C. K. Schneider) F. L. Martin USA: California Hills about Pelican Bay, Santa Cruz Island H. L. Mason 4108 1927-9-25
GH: 00345133 Lyonothamnus floribundus aspleniifolius (Greene) Brandegee USA: California Hills about Pelican Bay. Santa Cruz Island. H. L. Mason 4109 1927-9-25
GH: 00346738 Prunus demissa (Nuttall) Walpers USA: California San Gabriel Mountains H. L. Mason 3777 1927-6-15
GH: 00346738 Prunus virginiana demissa (Nuttall) Torrey USA: California San Gabriel Mountains H. L. Mason 3777 1927-6-15
Saxifragaceae GH: 00363688 Boykinia elata (Nuttall) Greene USA: California West end of Big Basin H. L. Mason 3976 1927-7-27
GH: 00363688 Boykinia occidentalis Torrey & A. Gray USA: California West end of Big Basin H. L. Mason 3976 1927-7-27
GH: 00381242 Tiarella unifoliata Hooker USA: California Bean Creek, Mt. Herman, Santa Cruz Mts. H. L. Mason 4003 1927-7-31
Scapaniaceae FH: 00510689 Scapania bolanderi Austin USA: Washington [data not captured] H. L. Mason 3944 1927-7-11
