Rare Flora Threatened by the Inter-County Connector (ICC)

~ John M. Parrish, December 2002

Common Name Scientific Name State Rank/Status Park/Watershed ICC Alignment
1 Pubescent Sedge Carex hirtifolia S3 Rock Creek Park MPA/NA
2 Carolina Tassel-rue Trautvetteria caroliniensis S3 Rock Creek Park MPA/NA
3 Showy Skullcap Scutellaria serrata S3 Rock Creek Park, Northwest Branch Park MPA/NA
4 Bashful Bulrush Scirpus verecundus S2S3 Rock Creek, NW Branch & Paint Branch Parks MPA/NA
5 American Chestnut Castanea dentata S2S3 Rock Creek & Paint Branch Parks, Indian Creek MPA/NA
6 Trailing Stitchwort Stellaria alsine S1/Endangered North Branch Rock Creek Park MPA/NA
7 Woolly Sedge Carex pellita S2 Northwest Branch Park MPA
8 Rough Avens Geum laciniatum S3 Northwest Branch Park MPA
9 Butternut Juglans cinerea S2S3 Northwest Branch Park MPA
10 Umbrella Magnolia Magnolia tripetala S3 Northwest Branch watershed w. of Notley Rd MPA
11 Carolina Leaf-flower Phyllanthus caroliniensis S3 Northwest Branch Park MPA
12 Pale Green Orchid * Platanthera flava S2 Northwest Branch Park grows near MPA
13 Purple Fringeless Orchid * Platanthera peramoena S1/Threatened Northwest Branch Park grows near MPA
14 Halberd-leaved Greenbrier Smilax pseudochina S2/Threatened Little Paint Branch & Indian Creek watersheds MPA & NA
15 Velvety Tick-trefoil * Desmodium viridiflorum S3 Little Paint Branch grows near NA
16 Ground Cedar * Lycopodium tristachyum S3 Little Paint Branch grows near NA
17 Featherbells * Stenanthium gramineum S1/Threatened Paint Branch watershed on proposed parkland grows near NA
18 Spiral Pondweed Potamogeton spirillus S1 Indian Creek watershed east of I-95 MPA/NA
19 Button Sedge Carex bullata S3 Indian Creek watershed west of I-95 MPA/NA
20 Rough-leaved Aster Aster radula S1/Endangered Indian Creek watershed east of I-95 MPA/NA
21 Grey Birch Betula populifolia SU Indian Creek watershed east of I-95 MPA

Codes

* Denotes species that are not in the actual right-of-way, but live nearby.

MPA = Master Plan Alternative; NA = Northern Alternative

S1 Highly state rare. Critically imperiled in Maryland because of state rarity.

S2 State rare. Imperiled in Maryland because of rarity.

S3 Watchlist. Rare to uncommon in Maryland, worthy of attention due to limited distributions, declining populations, or ecological vulnerabilities.

SU Status Unknown. Possibly rare in Maryland.

© John M. Parrish, 2002. Used by MNPS with permission. Copies may be made for personal use, but commercial publication is not permitted.