Parent Category Figures
1 Penstemon cobaea 693
2 Penstemon digitalis 667
3 Penstemon newberryi 422
4 Penstemon centranthifolius 369
5 Penstemon heterophyllus 275
6 Penstemon barbatus 254
7 Penstemon spectabilis 248
8 Penstemon hirsutus 207
9 Penstemon eatonii 187
10 Penstemon palmeri 174
11 Penstemon laxiflorus 152
12 Penstemon rydbergii 133
13 Penstemon roseus 132
14 Penstemon tenuis 130
15 Penstemon whippleanus 121
16 Penstemon procerus 118
17 Penstemon heterodoxus 113
18 Penstemon rostriflorus 107
19 Penstemon speciosus 107
20 Penstemon davidsonii 103
21 Penstemon parryi 95
22 Penstemon grandiflorus 90
23 Penstemon deustus 78
24 Penstemon clevelandii 74
25 Penstemon grinnellii 74
26 Penstemon neomexicanus 71
27 Penstemon baccharifolius 68
28 Penstemon serrulatus 67
29 Penstemon albidus 66
30 Penstemon strictus 61
31 Penstemon canescens 58
32 Penstemon cyananthus 57
33 Penstemon gentianoides 56
34 Penstemon utahensis 53
35 Penstemon linarioides 46
36 Penstemon fendleri 43
37 Penstemon ambiguus 41
38 Penstemon triflorus 41
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 34
47 Penstemon gracilentus 30
48 Penstemon secundiflorus 29
49 Penstemon labrosus 28
50 Penstemon laevigatus 28
51 Penstemon humilis 27
52 Penstemon cardwellii 25
53 Penstemon virgatus 25
54 Penstemon albomarginatus 25
55 Penstemon australis 25
56 Penstemon confertus 22
57 Penstemon azureus 22
58 Penstemon calycosus 22
59 Penstemon murrayanus 22
60 Penstemon pachyphyllus 21
61 Penstemon buckleyi 19
62 Penstemon nitidus 19
63 Penstemon leonensis 19
64 Penstemon multiflorus 17
65 Penstemon amphorellae 16
66 Penstemon ellipticus 15
67 Penstemon tubiflorus 15
68 Penstemon caesius 15
69 Penstemon petiolatus 14
70 Penstemon angustifolius 14
71 Penstemon comarrhenus 14
72 Penstemon floridus 12
73 Penstemon arkansanus 12
74 Penstemon glaber 12
75 Penstemon caespitosus 12
76 Penstemon campanulatus 11
77 Penstemon attenuatus 11
78 Penstemon incertus 11
79 Penstemon scapoides 11
80 Penstemon albertinus 10
81 Penstemon patens 10
82 Penstemon havardii 10
83 Penstemon roezlii 9
84 Penstemon unilateralis 9
85 Penstemon pruinosus 9
86 Penstemon tubaeflorus 9
87 Penstemon richardsonii 9
88 Penstemon gairdneri 8
89 Penstemon ovatus 8
90 Penstemon thurberi 8
91 Penstemon cyaneus 7
92 Penstemon thompsoniae 7
93 Penstemon eriantherus 7
94 Penstemon acuminatus 7
95 Penstemon anguineus 7
96 Penstemon pseudoputus 7
97 Penstemon platyphyllus 7
98 Penstemon lanceolatus 6
99 Penstemon gormanii 6
100 Penstemon leiophyllus 6
101 Penstemon grahamii 6
102 Penstemon miniatus 6
103 Penstemon scariosus 6
104 Penstemon barrettiae 6
105 Penstemon tenuiflorus 6
106 Penstemon isophyllus 5
107 Penstemon superbus 5
108 Penstemon globosus 5
109 Penstemon pumilus 5
110 Penstemon payettensis 5
111 Penstemon pinifolius 5
112 Penstemon oklahomensis 5
113 Penstemon jamesii 5
114 Penstemon eximius 4
115 Penstemon euglaucus 4
116 Penstemon purpusii 4
117 Penstemon montanus 4
118 Penstemon subulatus 4
119 Penstemon wislizenii 4
120 Penstemon goodrichii 4
121 Penstemon venustus 4
122 Penstemon dasyphyllus 3
123 Penstemon dolius 3
124 Penstemon flowersii 3
125 Penstemon harbourii 3
126 Penstemon immanifestus 3
127 Penstemon lentus 3
128 Penstemon californicus 3
129 Penstemon nudiflorus 3
130 Penstemon smallii 3
131 Penstemon subserratus 3
132 Penstemon triphyllus 3
133 Penstemon watsonii 3
134 Penstemon wilcoxii 3
135 Penstemon parvulus 3
136 Penstemon cyanocaulis 3
137 Penstemon flavescens 2
138 Penstemon versicolor 2
139 Penstemon clutei 2
140 Penstemon calcareus 2
141 Penstemon guadalupensis 2
142 Penstemon lyallii 2
143 Penstemon crandallii 2
144 Penstemon radicosus 2
145 Penstemon deaveri 2
146 Penstemon glandulosus 2
147 Penstemon acaulis 2
148 Penstemon inflatus 2
149 Penstemon hartwegii 2
150 Penstemon rattanii 2
151 Penstemon neotericus 2
152 Penstemon alluviorum 2
153 Penstemon fruticiformis 2
154 Penstemon fremontii 2
155 Penstemon arenicola 2
156 Penstemon osterhoutii 2
157 Penstemon ophianthus 1
158 Penstemon atropurpureus 1
159 Penstemon gentryi 1
160 Penstemon concinnus 1
161 Penstemon galloensis 1
162 Penstemon filiformis 1
163 Penstemon fasciculatus 1
164 Penstemon wardii 1
165 Penstemon elegantulus 1
166 Penstemon debilis 1
167 Penstemon confusus 1
168 Penstemon wrightii 1
169 Penstemon dissectus 1
170 Penstemon discolor 1
171 Penstemon pennellianus 1
172 Penstemon peckii 1
173 Penstemon papillatus 1
174 Penstemon plagapineus 1
175 Penstemon x 1
176 Penstemon pratensis 1
177 Penstemon compactus 1
178 Penstemon oliganthus 1
179 Penstemon monoensis 1
180 Penstemon rhizomatosus 1
181 Penstemon minutifolius 1
182 Penstemon mensarum 1
183 Penstemon breviculus 1
184 Penstemon bracteatus 1
185 Penstemon rubicundus 1
186 Penstemon leonardii 1
187 Penstemon imberbis 1
188 Penstemon cinicola 1
189 Penstemon sepalulus 1
190 Penstemon henricksonii 1
191 Penstemon spatulatus 1
192 Penstemon hallii 1
193 Penstemon stenophyllus 1
194 Penstemon stephensii 1
195 Penstemon strictiformis 1
196 Penstemon griffinii 1