Author Archives: Botany Bill

Rubus hispidus – Swamp Dewberry
25 May 2019

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 … Continue reading

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Liparis liliifolia – Purple Twayblade
25 May 2019

This gallery contains 6 photos.

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 … Continue reading

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Which species of Oxalis is this?
18 May 2019

This gallery contains 10 photos.

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 … Continue reading

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VIola striata – Striped White Violet

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 … Continue reading

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Viola sororia – Common Blue Violet

  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., … Continue reading

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Viola primulifolia – Primrose-leaved Violet

  Viola primulifolia or Primrose-leaved Violet.

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Viola pedata

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Viola lanceolata

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Viola eriocarpa

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Viola cucullata – Marsh Violet

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Viola affinis – Sand Violet

This gallery contains 5 photos.

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.) … Continue reading

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Spotlight on Christine McElroy

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 … Continue reading

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2018 Plant Inventory Progress Report – A Banner Year

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 … Continue reading

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17 February 2019 – Palmettos in Myrtle Beach

This gallery contains 3 photos.

Today, my wife Becky and I paid a short visit to Myrtle Beach, South Carolina. Visitors to Myrtle Beach can’t help but notice the Palmettos planted around the city and other cities in the area. Here are some photos of … Continue reading

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16 February 2019 – My first encounter with Spanish Moss (Tillandsia usneoides)

Today I had my first encounter with Spanish Moss (Tillandsia usneoides). We saw it growing on trees throughout Florence, South Carolina. Spanish moss frequently grows on trees in tropical and subtropical regions. Around Florence at least, they seem to be … Continue reading

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8 October 2018 – Washington County Cactus Foray

Today, Joe Metzger and I went on a foray to locate two populations of cactus in Washington County, Maryland.     The first one was a reported population of Opuntia cespitosa in Kemps Mills where Clyde Reed collected a voucher … Continue reading

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25 August 2018 – Finding Cactus at Weinberg Park

Had an awesome time with Rangers Matt Grey and Chris Winton of Anne Arundel County Park and Recreation this afternoon scouting out the cactus at Weinberg Park in Pasadena. The site was near an old homestead. We could see two … Continue reading

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22 August 2018 – Maryland Cactus Sites

This is a working draft list of locations where cactus has been found in Maryland, excluding the Eastern Shore. (Eastern Shore sites may be added later.) If you know of a location not listed here, let me know at botanybill … Continue reading

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13 August 2018 – Queen Anne Canoe Launch

Had an awesome time today with Michael Ellis, park ranger and invasive plant specialist for the Maryland-National Capital Park and Planning Commission, Parks and Recreation. We visited two sites where prickly pear was growing.   FIRST SITE – The first … Continue reading

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11 August 2018 – Cactus in Elkridge

On the way home from Glen Arm, Maryland this morning, I stopped off at a location here in Elkridge where someone planted some prickly pear cactus evidently many years ago next to a parking lot.  The plants key out to … Continue reading

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