Displaying 1 - 50 out of 298 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Omphalotus illudens (Schwein.) Sacc. | I. M. Johnston 1569 | 05 Nov 1916 | United States of America | California | San Bernardino Co. near Upland. | — |
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| Cystopteris fragilis (L.) Bernh. | I. M. Johnston 84 | 01 Apr 1917 | United States of America | California | Cucamonga Canon (Charcoal Fork) | — |
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| Astragalus lentiginosus var. coachellae Barneby | I. M. Johnston 1065 | 04 Apr 1917 - 06 Apr 1917 | United States of America | California | Whitewater | — |
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| Coriolopsis gallica (Fr.) Ryvarden | I. M. Johnston 1771 | 04 Apr 1917 | United States of America | California | Riverside Co. Claremont, Andreas Canyon… | — |
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| Carex triquetra Boott | I. M. Johnston 1917 | 06 May 1917 | United States of America | California | Evey Cañon | — |
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| Carex lanuginosa Michx. | I. M. Johnston s.n. | 13 May 1917 | United States of America | California | Los Angeles Co. El Monte | — |
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| Carex subfusca W.Boott | I. M. Johnston 1393 | 03 Jul 1917 | United States of America | California | Coldwater Fk. of Lytle Creek | — |
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| Carex multicaulis L.H.Bailey | I. M. Johnston 1426 | 04 Jul 1917 | United States of America | California | San Antonio Mountains; Bear Cañon | — |
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| Carex praegracilis W.Boott | I. M. Johnston s.n. | 08 Jul 1917 | — | — | Mojave Desert. Near Victorville. | — |
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| Carex multicaulis L.H.Bailey | I. M. Johnston 1738 | 15 Jul 1917 | United States of America | California | Day Cañon, San Antonio Mountains | — |
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| Agrostis exarata Trin. | I. M. Johnston 1510 | 28 Jul 1917 | United States of America | California | San Antonio Mountains. | — |
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| Lupinus elatus I.M.Johnst. | I. M. Johnston 1627 | 30 Jul 1917 | United States of America | California | Head of Icehouse Cañon; San… | isotype |
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| Agrostis idahoensis Nash | I. M. Johnston 1522 | 30 Jul 1917 | United States of America | California | Kelly's cabin, Ontario Peak. Upper… | — |
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| Carex stenoptera Mack. | I. M. Johnston 1505 | 31 Jul 1917 | United States of America | California | Ice House Cañon, San Antonio… | holotype |
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| Carex subfusca W.Boott | I. M. Johnston 1636 | 23 Aug 1917 | United States of America | California | Pine Mt. | — |
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| Catastoma ater Lloyd | I. M. Johnston | Sep 1917 | United States of America | California | San Antonio Mountains | type fragment |
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| Eriogonum microthecum var. johnstonii Reveal | I. M. Johnston 1726 | 16 Sep 1917 | United States of America | California | San Antonio Mountains; west spur… | isotype |
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| Rosa californica Cham. & Schltdl. | I. M. Johnston 1795 | 03 Nov 1917 | United States of America | California | San Bernardino Co. Red Hill,… | — |
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| Tulostoma campestre Morgan | I. M. Johnston 208 | 17 Mar 1918 | United States of America | California | Los Angeles Co. Red Hill… | — |
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| Rosa johnstonii Rydb. | I. M. Johnston 2054 | 04 Jul 1918 | United States of America | California | San Bernardino Co. Red Hill,… | type |
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| Rosa johnstonii Rydb. | I. M. Johnston 2130 | 25 Aug 1918 | United States of America | California | San Bernardino Co. Near Upland | type |
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| Carex globosa Boott | I. M. Johnston 2132 | 01 Sep 1918 | United States of America | California | San Antonio Mountains. Upper Sonoran… | — |
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| Trametes hirsuta (Wulfen:Fr.) Lloyd | I. M. Johnston 217 | 17 Nov 1918 | United States of America | California | Evey Canyon, San Antonio Mts,… | — |
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| Cryptoporus volvatus (Peck) Shear | I. M. Johnston 111 | 28 Nov 1918 | United States of America | California | Los Angeles Co. Claremont | — |
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| Boletus flaviporus Earle | I. M. Johnston 6 | 01 Dec 1918 | United States of America | California | Los Angeles Co. San Antonio… | — | ||||
| Russula paxilloides Earle | I. M. Johnston 9 | 01 Dec 1918 | United States of America | California | Los Angeles Co. Evey Cañon,… | — | ||||
| Agaricus campestris L.:Fr. | I. M. Johnston 1 | 01 Dec 1918 | United States of America | California | Evey Canyon, San Antonio Mts,… | — |
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| Hypholoma capnoides (Fr.) Quél. | I. M. Johnston 57 | 01 Dec 1918 | United States of America | California | San Antonio Mts. | — | ||||
| Suillus granulatus (L.:Fr.) Kuntze | I. M. Johnston 20 | 08 Dec 1918 | United States of America | California | San Bernardino Co. | — | ||||
| Trametes hirsuta (Wulfen:Fr.) Lloyd | I. M. Johnston s.n. | 08 Dec 1918 | United States of America | California | Stoddard Canyon, San Antonio Mts | — |
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| Poria johnstonii Murrill | I. M. Johnston 252 | 15 Dec 1918 | United States of America | California | Upper San Antonio Canyon, San… | type |
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| Boletus rubellus Krombh. | I. M. Johnston 28 | 21 Dec 1918 | United States of America | California | Live Oak Canon, San Antonio… | — | ||||
| Boletus flaviporus Earle | I. M. Johnston 37 | 22 Dec 1918 | United States of America | California | Los Angeles Co. San Antonio… | — | ||||
| Armillaria putrida (Scop.) Murrill | I. M. Johnston 33 | 22 Dec 1918 | United States of America | California | Los Angeles Co. Claremont | — |
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| Marasmius plicatulus Peck | I. M. Johnston 32 | 22 Dec 1918 | United States of America | California | San Antonio Mountains | — |
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| Boletus rubellus Krombh. | I. M. Johnston 38 | 29 Dec 1918 | United States of America | California | Live Oak Canon, San Antonio… | — | ||||
| Boletus rubellus Krombh. | I. M. Johnston 39 | 29 Dec 1918 | United States of America | California | Live Oak Canon, San Antonio… | — | ||||
| Boletus flaviporus Earle | I. M. Johnston 40 | 29 Dec 1918 | United States of America | California | Live Oak Cañon, San Antonio… | — | ||||
| Omphalotus olivascens H.E.Bigelow, O.K.Mill. & Thiers | I. M. Johnston 42 | 29 Dec 1918 | United States of America | California | Live Oak Cañon, San Antonio… | — |
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| Boletus rubellus Krombh. | I. M. Johnston 43 | 30 Dec 1918 | United States of America | California | Los Angeles Co. Mouth of… | — | ||||
| Boletus rubellus Krombh. | I. M. Johnston 36 | 30 Dec 1918 | United States of America | California | Los Angeles Co. | — | ||||
| Bovista aestivalis (Bonord.) Demoulin | I. M. Johnston 1335 | Mar 1919 | United States of America | California | Alameda Co. | — | ||||
| Carex bella L.H.Bailey | I. M. Johnston A-90 | 08 Aug 1919 | United States of America | Colorado | El Paso Co. Pikes Peak,… | — |
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| Selaginella mutica D.C. Eaton ex Underw. | I. M. Johnston 2423 | 21 Jun 1920 | United States of America | Colorado | Ute Pass, a mile north… | — |
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| Selaginella underwoodii Hieron. | I. M. Johnston 2425 | 16 Aug 1920 | United States of America | Colorado | El Paso Co. Pikes Peak… | — |
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| Echinocereus maritimus (M.E.Jones) K.Schum. | I. M. Johnston 3007 | 7 Apr 1921 | Mexico | Baja California | Ensenada Mun. | — |
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| Acrosorium uncinatum (W.B.Turner) Kylin | I. M. Johnston 65 | 07 Apr 1921 | Mexico | Baja California | Ensenada Bay, Baja California | — |
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| Havardia sonorae (S.Watson) Britton & Rose | I. M. Johnston 3110 | 15 Apr 1921 | Mexico | Sonora | Guaymas Mun. Guaymas, Son | — |
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| Acacia willardiana Rose | I. M. Johnston 3125 | 17 Apr 1921 | Mexico | Sonora | San Pedro Nolasco | — | ||||
| Hofmeisteria pluriseta var. pauciseta I.M.Johnst. | I. M. Johnston 3134 | 17 Apr 1921 | Mexico | — | San Pedro Nolasco Island, Gulf… | isotype |
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