Published in Rhodora, in 1967, in volume 69, issue 777, pages 1-4
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/627867,60,60)
Published in Rhodora, in 1962, in volume 64, pages 207-211
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/33106422,60,60)
Published in Rhodora, in 1993, in volume 95, issue 882, pages 122-128
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/32226865,60,60)
Published in American Fern Journal, in 1995, in volume 85, pages 89-94
Created: 2017-04-23, modified: 2017-04-23![](https://www.biodiversitylibrary.org/pagethumb/28004077,60,60)
Published in Annals of the Missouri Botanical Garden, in 1974, in volume 61, pages 310-317
Created: 2010-01-08, modified: 2016-12-29![](https://www.biodiversitylibrary.org/pagethumb/632134,60,60)
Published in Rhodora, in 1966, in volume 68, issue 773, pages 59-92
Created: 2014-06-16, modified: 2016-07-26![](https://www.biodiversitylibrary.org/pagethumb/47399369,60,60)
Published in American Fern Journal, in 2012, in volume 102, pages 241-251
Created: 2017-04-23, modified: 2017-04-23![](https://www.biodiversitylibrary.org/pagethumb/31876396,60,60)
Published in American Fern Journal, in 1976, in volume 66, pages 69-74
Created: 2017-04-23, modified: 2017-04-23![](https://www.biodiversitylibrary.org/pagethumb/32084742,60,60)
Published in American Fern Journal, in 1999, in volume 89, pages 133-141
Created: 2017-04-23, modified: 2017-04-23![](https://www.biodiversitylibrary.org/pagethumb/32151925,60,60)
Published in American Fern Journal, in 1993, in volume 83, pages 128
Created: 2017-04-23, modified: 2017-04-23![](https://www.biodiversitylibrary.org/pagethumb/32084800,60,60)
Published in American Fern Journal, in 1999, in volume 89, pages 187-197
Created: 2017-04-23, modified: 2017-04-23![](https://www.biodiversitylibrary.org/pagethumb/42640418,60,60)
Published in Scopus, in 1977, in volume 1, pages 68-70
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/42640463,60,60)
Published in Scopus, in 1977, in volume 1, pages 109-111
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/32132193,60,60)
Published in Torreya, in 1902, in volume 2, issue 3, pages 43-45
Created: 2022-12-14, modified: 2022-12-14![](https://www.biodiversitylibrary.org/pagethumb/52979343,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1887, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979335,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1882, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979346,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1888, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979350,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1888, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/32130152,60,60)
Published in Torreya, in 1901, in volume 1, issue 7, pages 82-84
Created: 2022-12-14, modified: 2022-12-14![](https://www.biodiversitylibrary.org/pagethumb/42640341,60,60)
Published in Scopus, in 1977, in volume 1, pages 48-49
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/42640436,60,60)
Published in Scopus, in 1977, in volume 1, pages 86
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/52979393,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979396,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979387,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979389,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979390,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979397,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979399,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979400,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979391,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979392,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979385,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979386,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979402,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1891, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979337,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1882, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979339,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1884, pages 1-3
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979342,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1884, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979345,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1888, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979348,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1888, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979352,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1888, pages 1-4
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979356,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1888, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979362,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1888, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979364,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1889, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979365,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1889, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979367,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1889, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979369,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1889, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979370,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1889, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979381,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1-2
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979383,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24![](https://www.biodiversitylibrary.org/pagethumb/52979384,60,60)
Published in Asa Gray correspondence. Senders Br-Bz, in 1890, pages 1
Created: 2017-06-24, modified: 2017-06-24