Orobanchaceae GH: 02033572  Castilleja applegatei  Fernald USA: California Route 24, Along Feather River, above Pulga   F. W. Pennell & A. A. Heller 25692 1940-6-5 
 GH: 01877917  Castilleja miniata  Douglas ex Hooker USA: Arizona Route 66; west of Flagstaff   F. W. Pennell & A. A. Heller 26474 1940-8-28 
 GH: 01879609  Castilleja sp.  Linnaeus USA: California Route 24 Along Feather River, above Oroville...  F. W. Pennell & A. A. Heller 25685 1940-6-5 
 GH: 01879581  Castilleja wightii rubra Pennell USA: California Route 24 Along Feather River, above Oroville   F. W. Pennell & A. A. Heller 25676 1940-6-5 
 GH: 01879579  Castilleja wightii rubra Pennell USA: California Route 24, 6 miles up, Along Feather River, a...  F. W. Pennell & A. A. Heller 25674 1940-6-5 
Plantaginaceae GH: 01998991  Collinsia sparsiflora bruceae (M. E. Jones) Newsom USA: California [data not captured]   F. W. Pennell & A. A. Heller 25679 1940-6-5 
 GH: 01999015  Collinsia tinctoria  Hartweg ex Bentham USA: California [data not captured]   F. W. Pennell & A. A. Heller 25684 1940-6-5 
 GH: 02002439  Penstemon attenuatus  Douglas ex Lindley USA: California [data not captured]   F. W. Pennell & A. A. Heller 25678 1940-6-5 
 GH: 02002580  Penstemon azureus  Bentham USA: California [data not captured]   F. W. Pennell & A. A. Heller 25675 1940-6-5 
 GH: 02002579  Penstemon azureus  Bentham USA: California [data not captured]   F. W. Pennell & A. A. Heller 25683 1940-6-5 
 GH: 02002947  Penstemon caelestinus  Pennell USA: Montana [data not captured]   F. W. Pennell & A. A. Heller 20521 1937-6-23 
 GH: 02120635  Penstemon laetus leptosepalus A. Gray USA: California [data not captured]   F. W. Pennell & A. A. Heller 25682 1940-6-5 
 GH: 01801641  Penstemon sp.   USA: California [data not captured]   F. W. Pennell & A. A. Heller 25693 1940-6-5 
Scrophulariaceae GH: 00367039  Diplacus grandiflorus  Groenland USA: California Route 24, along Feather River, below Belden   F. W. Pennell & A. A. Heller 25687 1940-6-5 
 GH: 00367253  Erythranthe glaucescens  (Greene) G. L. Nesom USA: California Route 24, Along Feather River, above Orovill...  F. W. Pennell & A. A. Heller 25686 1940-6-5 
 GH: 00367254  Erythranthe glaucescens  (Greene) G. L. Nesom USA: California above Richardson Springs   F. W. Pennell & A. A. Heller 25667 1940-6-4 
 GH: 00387433  Erythranthe latidens  (Greene) G. L. Nesom USA: California about 4 miles west of Chico   F. W. Pennell & A. A. Heller 25671 1940-6-4 
 GH: 00367039  Mimulus aurantiacus grandiflorus (Lindley) D. M. Thompson USA: California Route 24, along Feather River, below Belden   F. W. Pennell & A. A. Heller 25687 1940-6-5 
 GH: 00367253  Mimulus glaucescens  Greene USA: California Route 24, Along Feather River, above Orovill...  F. W. Pennell & A. A. Heller 25686 1940-6-5 
 GH: 00367254  Mimulus glaucescens  Greene USA: California above Richardson Springs   F. W. Pennell & A. A. Heller 25667 1940-6-4 
 GH: 00387433  Mimulus latidens  (A. Gray) Greene USA: California about 4 miles west of Chico   F. W. Pennell & A. A. Heller 25671 1940-6-4