Parent Category Figures
1 Penstemon cobaea 693
2 Penstemon digitalis 663
3 Penstemon newberryi 419
4 Penstemon centranthifolius 371
5 Penstemon heterophyllus 275
6 Penstemon spectabilis 249
7 Penstemon barbatus 243
8 Penstemon hirsutus 204
9 Penstemon eatonii 188
10 Penstemon palmeri 175
11 Penstemon laxiflorus 152
12 Penstemon rydbergii 132
13 Penstemon tenuis 130
14 Penstemon roseus 128
15 Penstemon procerus 119
16 Penstemon whippleanus 118
17 Penstemon heterodoxus 112
18 Penstemon speciosus 108
19 Penstemon rostriflorus 105
20 Penstemon davidsonii 102
21 Penstemon parryi 95
22 Penstemon grandiflorus 88
23 Penstemon deustus 78
24 Penstemon clevelandii 75
25 Penstemon grinnellii 74
26 Penstemon neomexicanus 71
27 Penstemon albidus 66
28 Penstemon serrulatus 66
29 Penstemon baccharifolius 65
30 Penstemon strictus 61
31 Penstemon cyananthus 57
32 Penstemon canescens 57
33 Penstemon utahensis 53
34 Penstemon gentianoides 51
35 Penstemon linarioides 47
36 Penstemon fendleri 43
37 Penstemon ambiguus 41
38 Penstemon triflorus 40
39 Penstemon pallidus 39
40 Penstemon laetus 39
41 Penstemon pseudospectabilis 38
42 Penstemon virens 37
43 Penstemon gracilis 37
44 Penstemon rupicola 36
45 Penstemon bicolor 34
46 Penstemon fruticosus 33
47 Penstemon gracilentus 31
48 Penstemon labrosus 30
49 Penstemon secundiflorus 28
50 Penstemon humilis 27
51 Penstemon laevigatus 26
52 Penstemon virgatus 26
53 Penstemon albomarginatus 25
54 Penstemon australis 25
55 Penstemon cardwellii 25
56 Penstemon azureus 22
57 Penstemon calycosus 22
58 Penstemon murrayanus 22
59 Penstemon confertus 22
60 Penstemon pachyphyllus 21
61 Penstemon buckleyi 19
62 Penstemon nitidus 19
63 Penstemon leonensis 18
64 Penstemon multiflorus 17
65 Penstemon amphorellae 16
66 Penstemon caesius 16
67 Penstemon tubiflorus 15
68 Penstemon petiolatus 14
69 Penstemon ellipticus 14
70 Penstemon angustifolius 14
71 Penstemon comarrhenus 14
72 Penstemon caespitosus 12
73 Penstemon glaber 12
74 Penstemon arkansanus 12
75 Penstemon floridus 12
76 Penstemon attenuatus 11
77 Penstemon campanulatus 11
78 Penstemon incertus 11
79 Penstemon scapoides 11
80 Penstemon albertinus 10
81 Penstemon patens 10
82 Penstemon leiophyllus 9
83 Penstemon unilateralis 9
84 Penstemon pruinosus 9
85 Penstemon richardsonii 9
86 Penstemon roezlii 9
87 Penstemon tubaeflorus 9
88 Penstemon ovatus 8
89 Penstemon havardii 8
90 Penstemon thurberi 8
91 Penstemon gairdneri 8
92 Penstemon cyaneus 8
93 Penstemon miniatus 7
94 Penstemon thompsoniae 7
95 Penstemon pseudoputus 7
96 Penstemon platyphyllus 7
97 Penstemon anguineus 7
98 Penstemon eriantherus 7
99 Penstemon scariosus 6
100 Penstemon grahamii 6
101 Penstemon gormanii 6
102 Penstemon acuminatus 6
103 Penstemon tenuiflorus 6
104 Penstemon barrettiae 6
105 Penstemon lanceolatus 6
106 Penstemon globosus 5
107 Penstemon superbus 5
108 Penstemon pinifolius 5
109 Penstemon pumilus 5
110 Penstemon payettensis 5
111 Penstemon oklahomensis 5
112 Penstemon isophyllus 5
113 Penstemon purpusii 4
114 Penstemon subulatus 4
115 Penstemon parvulus 4
116 Penstemon venustus 4
117 Penstemon euglaucus 4
118 Penstemon montanus 4
119 Penstemon wislizenii 4
120 Penstemon goodrichii 4
121 Penstemon eximius 4
122 Penstemon dasyphyllus 3
123 Penstemon dolius 3
124 Penstemon flowersii 3
125 Penstemon harbourii 3
126 Penstemon immanifestus 3
127 Penstemon jamesii 3
128 Penstemon lentus 3
129 Penstemon californicus 3
130 Penstemon nudiflorus 3
131 Penstemon smallii 3
132 Penstemon subserratus 3
133 Penstemon triphyllus 3
134 Penstemon wilcoxii 3
135 Penstemon cyanocaulis 3
136 Penstemon fremontii 2
137 Penstemon versicolor 2
138 Penstemon flavescens 2
139 Penstemon osterhoutii 2
140 Penstemon lyallii 2
141 Penstemon watsonii 2
142 Penstemon guadalupensis 2
143 Penstemon deaveri 2
144 Penstemon clutei 2
145 Penstemon alluviorum 2
146 Penstemon acaulis 2
147 Penstemon calcareus 2
148 Penstemon neotericus 2
149 Penstemon hartwegii 2
150 Penstemon crandallii 2
151 Penstemon inflatus 2
152 Penstemon radicosus 2
153 Penstemon rattanii 2
154 Penstemon fruticiformis 2
155 Penstemon arenicola 2
156 Penstemon griffinii 1
157 Penstemon compactus 1
158 Penstemon atropurpureus 1
159 Penstemon glandulosus 1
160 Penstemon gentryi 1
161 Penstemon concinnus 1
162 Penstemon debilis 1
163 Penstemon galloensis 1
164 Penstemon filiformis 1
165 Penstemon wardii 1
166 Penstemon fasciculatus 1
167 Penstemon elegantulus 1
168 Penstemon wrightii 1
169 Penstemon confusus 1
170 Penstemon dissectus 1
171 Penstemon discolor 1
172 Penstemon pennellianus 1
173 Penstemon peckii 1
174 Penstemon plagapineus 1
175 Penstemon papillatus 1
176 Penstemon x 1
177 Penstemon pratensis 1
178 Penstemon ophianthus 1
179 Penstemon oliganthus 1
180 Penstemon rhizomatosus 1
181 Penstemon monoensis 1
182 Penstemon minutifolius 1
183 Penstemon breviculus 1
184 Penstemon bracteatus 1
185 Penstemon rubicundus 1
186 Penstemon mensarum 1
187 Penstemon leonardii 1
188 Penstemon imberbis 1
189 Penstemon cinicola 1
190 Penstemon sepalulus 1
191 Penstemon spatulatus 1
192 Penstemon henricksonii 1
193 Penstemon stenophyllus 1
194 Penstemon stephensii 1
195 Penstemon strictiformis 1
196 Penstemon hallii 1