| canada | | mastocarpus stellatus | species | 1 | 0 |
| canada | british columbia | mastocarpus alaskensis | species | 35 | 0 |
| canada | british columbia | mastocarpus californianus | species | 11 | 0 |
| canada | british columbia | mastocarpus intermedius | species | 11 | 0 |
| canada | british columbia | mastocarpus jardinii | species | 55 | 0 |
| canada | british columbia | mastocarpus latissimus | species | 10 | 0 |
| canada | british columbia | mastocarpus papillatus | species | 39 | 0 |
| canada | british columbia | mastocarpus papillatus s.l. clade 1 | species | 31 | 0 |
| canada | british columbia | mastocarpus papillatus s.l. clade 2 | species | 44 | 0 |
| canada | british columbia | mastocarpus papillatus s.l. clade 3 | species | 24 | 0 |
| canada | british columbia | mastocarpus papillatus s.l. clade 4 | species | 16 | 0 |
| canada | british columbia | mastocarpus papillatus s.l. clade 5 | species | 1 | 0 |
| canada | british columbia | mastocarpus rigidus | species | 7 | 0 |
| canada | british columbia | mastocarpus sp. gws-2009a | species | 28 | 0 |
| canada | new brunswick | mastocarpus stellatus | species | 6 | 0 |
| canada | newfoundland and labrador | mastocarpus stellatus | species | 1 | 0 |
| canada | nova scotia | mastocarpus stellatus | species | 1 | 0 |
| china | | mastocarpus stellatus | species | 1 | 0 |
| denmark | | mastocarpus stellatus | species | 6 | 0 |
| france | bretagne region | mastocarpus stellatus | species | 120 | 0 |
| ireland | | mastocarpus stellatus | species | 15 | 0 |
| ireland | connaught province | mastocarpus stellatus | species | 1 | 0 |
| japan | | mastocarpus pacificus | species | 1 | 0 |
| japan | hokkaido prefecture | mastocarpus pacificus | species | 1 | 0 |
| japan | hokkaido prefecture | mastocarpus sp. clade 7 | species | 5 | 0 |
| norway | hordaland county | mastocarpus stellatus | species | 2 | 0 |
| norway | nordland county | mastocarpus stellatus | species | 2 | 0 |
| portugal | | mastocarpus stellatus | species | 1 | 0 |
| spain | galicia | mastocarpus stellatus | species | 7 | 0 |
| united kingdom | | mastocarpus stellatus | species | 3 | 0 |
| united kingdom | england | mastocarpus stellatus | species | 2 | 0 |
| united kingdom | scotland | mastocarpus stellatus | species | 1 | 0 |
| united states | | mastocarpus papillatus | species | 4 | 0 |
| united states | alaska | mastocarpus jardinii | species | 2 | 0 |
| united states | alaska | mastocarpus pacificus | species | 2 | 0 |
| united states | alaska | mastocarpus papillatus | species | 1 | 0 |
| united states | alaska | mastocarpus papillatus s.l. clade 1 | species | 29 | 0 |
| united states | alaska | mastocarpus papillatus s.l. clade 5 | species | 3 | 0 |
| united states | alaska | mastocarpus sp. clade 7 | species | 17 | 0 |
| united states | california | mastocarpus agardhii | species | 6 | 0 |
| united states | california | mastocarpus californianus | species | 9 | 0 |
| united states | california | mastocarpus cristatus | species | 2 | 0 |
| united states | california | mastocarpus intermedius | species | 18 | 0 |
| united states | california | mastocarpus jardinii | species | 2 | 0 |
| united states | california | mastocarpus jardinii s.l. clade 2 | species | 1 | 0 |
| united states | california | mastocarpus papillatus | species | 3 | 0 |
| united states | california | mastocarpus papillatus s.l. clade 2 | species | 2 | 0 |
| united states | california | mastocarpus papillatus s.l. clade 3 | species | 2 | 0 |
| united states | california | mastocarpus papillatus s.l. clade 5 | species | 4 | 0 |
| united states | california | mastocarpus sp. a papillatus | species | 1 | 0 |
| united states | california | mastocarpus sp. clade9papillatus | species | 6 | 0 |
| united states | california | mastocarpus sp. gws-2009a | species | 5 | 0 |
| united states | maine | mastocarpus stellatus | species | 3 | 0 |
| united states | rhode island | mastocarpus stellatus | species | 1 | 0 |
| united states | washington | mastocarpus papillatus s.l. clade 1 | species | 3 | 0 |
| united states | washington | mastocarpus papillatus s.l. clade 3 | species | 1 | 0 |