A Method to Press Cactus

16 June 2019 Botany Bill Journal

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Milestone Reached –
Collection Number 10000 –
15 June 2019

15 June 2019 Botany Bill Journal

Well, I just reached a cool milestone with my plant collection – I just hit collection number 10000. It was an Opuntia probably O. humifusa s.s. collected at the Cromwell Valley Park in Parkville, Maryland, 15 June 2019. I know I will never surpass prolific collectors like Clyde Reed whose collection number surpassed 150000 or […]

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Ophioglossum pycnostichum –
13 June 2019

13 June 2019 Botany Bill JournalPlant Profile

Ophioglossum pycnostichum (Southern Adders Tongue) is native to Southeastern North America. Some authors subsume this species under Ophioglossum vulgatum s.l. which is found in Europe and Asia. Even though it does not look like it, it is a type of a primitive fern.     The sporophore (the spore bearing spike) is said to resemble […]

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Cactus citizen science project – Locating Maryland cactus populations and identifying species.

4 June 2019 Botany Bill Journal

Did you know that there are three putative species of cacti in Maryland? Lucus Majure, PhD. at Floritda at the Museum of Natural History in Gainesville has recently updated the taxonomy of the cactus native to the East Coast of the USA. According to his treatment, there are three species native to Maryland. So it […]

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Viola primulifolia –
Primrose-leaved Violet

1 June 2019 Botany Bill JournalPlant Profile

  Viola primulifolia or Primrose-leaved Violet is an acaulescent viola meaning that the flowering stem grows from the crown of the plant along with the leaves. Its natural range is Eastern USA from Maine in the north, Iowa and Texas in the west, and Florida in the South. It prefers wet areas like seepages. It […]

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Liparis liliifolia –
Purple Twayblade – Part 2
31 May 2019

31 May 2019 Botany Bill JournalPlant Profile

Today, we visited a second site where Liparis liliifolia (Purple Twayblade) was growing on the Refuge. We looked around and found several patches of these lovely orchids thriving. In all, it is possible we spotted over 100 individual plants. I am sure that if we spent more time in the area, we could have found […]

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Opuntia cespitosa –
Eastern Prickly Pear –
31 May 2019

31 May 2019 Botany Bill Journal

The Eastern Prickly Pear Cactus (Opuntia cespitosa) is in full bloom on the Patuxent Research Refuge today by Lake Allen on the North Tract. This species differs from the other two species of Opuntia found in Maryland by the reddish area at the base of the petals, and smooth spines found mainly on the margins […]

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Rubus hispidus – Swamp Dewberry
25 May 2019

25 May 2019 Botany Bill Journal

After we re-discovered the location of the Liparis liliifolia on the North Tract, Dave and I did a little foraying in the powerline area. We found some patches of Rubus hispidus (Swamp Dewberry) in bloom. It is also sometimes called Bristly Dewberry. It differs from the other two species of Dewberry (R. flagellaris and R. […]

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Liparis liliifolia – Purple Twayblade Part 2
25 May 2019

25 May 2019 Botany Bill Journal

Today, Dave Anderson and I re-discovered the location of a patch of Liparis liliifolia in bloom that Dave initially spotted last year on the North Tract after the blooming season. This is a new record for this species on the Refuge. It is considered to be a Maryland S2 threatened species. Next week, we will […]

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Which species of Oxalis is this?
18 May 2019

18 May 2019 Botany Bill Journal

Which species of Oxalis is this? I suspect it could be Oxalic colorea? Maybe. If not what other species could this be? We have measured the petals to be at least 7 mm, but never more than 10 mm. It was first found on the Patuxent Research Refuge, Maryland in April 2017. These images were […]

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Botrychium matricariifolium

11 May 2019 Botany Bill JournalPlant Profile

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VIola striata – Striped White Violet

1 May 2019 Botany Bill Journal

Viola striata is native to Eastern North America and is mostly (not always) found away from the Coastal Plain. On the Refuge, it is found in the floodplain/bottomland woods. It is a caulescent violet meaning that the flowers are found on nodes (or leaf axils) along the above-ground stem and not directly from the crown […]

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Viola sororia – Common Blue Violet

1 May 2019 Botany Bill Journal

  Viola sororia also known as Common Blue Violet is an acaulescent violet found in Eastern North America. It is commonly found on the Refuge in hydric habitats like bottomland woods and roadside seepages. It will invade lawns and gardens., and is sometimes considered to be weedy.       There are several different flower […]

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Viola pedata

1 May 2019 Botany Bill Journal

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Viola lanceolata

1 May 2019 Botany Bill Journal

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Viola eriocarpa

1 May 2019 Botany Bill Journal

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Viola cucullata – Marsh Violet

1 May 2019 Botany Bill Journal

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Viola affinis – Sand Violet

1 May 2019 Botany Bill Journal

Viola affinis or Sand Violet is an acaulescent violet found in the eastern part of North America from Quebec and Ontario in the south and Florida to Texas in the south. (Acaulescent means the flower rises from a non-leafy stem.) On the Patuxent Research Refuge, it is seen in wet sandy areas usually near seepages.

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Spotlight on Christine McElroy

19 April 2019 Botany Bill Journal

As the lead of the refuge plant inventory project, I would like to formally acknowledge the important contribution that Christine McElroy has made and is making with restoring voucher specimens in the Patuxent Research Refuge Herbarium. The positive impact of her work cannot be overstated. Christine has faithfully come to the North Tract Visitors Contact […]

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2018 Plant Inventory Progress Report – A Banner Year

11 April 2019 Botany Bill Journal

2018 was a banner year for the Patuxent Research Refuge (PRR) Plant Inventory Project (PIP) Team. The biggest event was the digital-imaging of about 4600 Refuge herbarium voucher sheets by the team. The PIP team appreciates Professor Maile Neel, Director of the Norton-Brown Herbarium, University of Maryland for her guidance and assistance in providing the […]

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