Carex straminea var. intermedia Carex straminea var. foenea Carex straminea var. ferruginea Carex straminea var. chlorostachys Carex foenea var. ferruginea Carex festucacea var. ferruginea Carex albolutescens var. sparsiflora Carex albolutescens var. ferruginea Carex albolutescens var. brunnea Carex alata var. ferruginea