Status: Native
Synonyms:
Barbula indica (Hooker) Sprengel
Tortula indica Hooker
Trichostomum orientale F. Weber
Hydrogonium orientale could at a quick glance be mistaken for Barbula unguiculata. However,
two quite interesting features distinguish it. First, H. orientale has elongate cells on the abaxial
surface of the distal costa that are prorate on both ends. The rest of the leaf is strongly papillose, so this feature
of the costa is not as conspicuous as might be expected. The second feature of interest is the presence of
clusters of tiny multicellular stalked gemmae at the bases of the leaves.
Many thanks to the University of Colorado Herbarium (COLO), Erin Tripp & Dina Clark for loaning us this specimen for photography.
Please click on an image for a larger file.
Hydrogonium orientale, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, dark field photomicrograph of moistened stem, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of leaf with gemmae at base, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of leaf, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of leaf apex, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of leaf base, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of leaf base with gemmae, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of cells at midleaf, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of gemma at leaf base, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of free gemmae cluster, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of costa with doubly prorate cells, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of costa with doubly prorate cells, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of leaf cross section, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
Hydrogonium orientale, photomicrograph of leaf cross section, collection and ID (as Barbula cruegeri) by S. Flowers (annotated to Barbula indica by R. Zander, 1995-6), Utah, Kane County, Colorado River, in Kane Creek on wet sandstone wall, August 1, 1958; photographs by Russ Kleinman & Karen Blisard, June 16, 2023
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