Click on the first letter of the common name.

Threatened Plants and algae

 		Species 1 - 30 of 30
Thumbnail for Cyanea horrida (Haha)
Haha (Cyanea horrida)
As of 2003, less than 20 individuals of this incredibly rare plant were believed to remain. The haha is a palm-like tree, with... More 1 Image 0 Videos
Thumbnail for Cyanea marksii (Haha)
Haha (Cyanea marksii)
Information on the haha is currently being researched and written and will appear here shortly... More 2 Images 0 Videos
Thumbnail for Cyanea hamatiflora (Haha)
Haha (Cyanea hamatiflora)
Information on the haha is currently being researched and written and will appear here shortly... More 1 Image 0 Videos
Thumbnail for Cyanea asplenifolia (Haha)
Haha (Cyanea asplenifolia)
Information on the haha is currently being researched and written and will appear here shortly... More 3 Images 0 Videos
Thumbnail for Cyanea stictophylla (Haha)
Haha (Cyanea stictophylla)
Information on the haha is currently being researched and written and will appear here shortly... More 4 Images 0 Videos
Thumbnail for Pleomele auwahiensis (Halapepe)
Halapepe (Pleomele auwahiensis)
Information on the halapepe is currently being researched and written and will appear here shortly... More 21 Images 0 Videos
Thumbnail for Santalum haleakalae (Haleakala sandalwood)
Haleakala sandalwood (Santalum haleakalae)
Information on the Haleakala sandalwood is currently being researched and written and will appear here shortly... More 10 Images 0 Videos
Thumbnail for Bupleurum kakiskalae (Hare's-ear)
Hare's-ear (Bupleurum kakiskalae)
ARKive is supporting the IUCN Species Survival Commission's Top 50 Plants Campaign. The aim of this campaign is to help save plant... More 2 Images 0 Videos
Thumbnail for Sparaxis tricolor (Harlequin flower)
Harlequin flower (Sparaxis tricolor)
Information on Sparaxis tricolor is currently being researched and written and will appear here shortly... More 6 Images 0 Videos
Thumbnail for Tillandsia harrisii (Harris’ tillandsia)
Harris’ tillandsia (Tillandsia harrisii)
Information on Harris’ tillandsia is currently being researched and written and will appear here shortly... More 1 Image 0 Videos
Thumbnail for Hibiscadelphus hualalaiensis (Hau kuahiwi)
Hau kuahiwi (Hibiscadelphus hualalaiensis)
Information on Hibiscadelphus hualalaiensis is currently being researched and written and will appear here shortly... More 3 Images 0 Videos
Thumbnail for Hibiscadelphus distans (Hau kuahiwi)
Hau kuahiwi (Hibiscadelphus distans)
Information on the hau kuahiwi is currently being researched and written and will appear here shortly... More 1 Image 0 Videos
Thumbnail for Hibiscadelphus giffardianus (Hau kuahiwi)
Hau kuahiwi (Hibiscadelphus giffardianus)
Information on Hibiscadelphus giffardianus is currently being researched and written and will appear here shortly... More 1 Image 0 Videos
Thumbnail for Zanthoxylum hawaiiense (Hawaii prickly-ash)
Hawaii prickly-ash (Zanthoxylum hawaiiense)
Information on the Hawaii prickly-ash is currently being researched and written and will appear here shortly... More 8 Images 0 Videos
Thumbnail for Kokia drynarioides (Hawaiian cotton tree)
Hawaiian cotton tree (Kokia drynarioides)
Information on the Hawaiian cotton tree is currently being researched and written and will appear here shortly... More 7 Images 0 Videos
Thumbnail for Cyanea magnicalyx (Hawaiian cyanea tree)
Hawaiian cyanea tree (Cyanea magnicalyx)
Discovered as recently as 2004, this extremely rare species is, as of 2008, only known from fewer than ten individuals. Cyanea... More 1 Image 0 Videos
Thumbnail for Gardenia brighamii (Hawaiian gardenia)
Hawaiian gardenia (Gardenia brighamii)
Information on the Hawaiian gardenia is currently being researched and written and will appear here shortly... More 6 Images 0 Videos
Thumbnail for Anoectochilus sandvicensis (Hawaiian jewel-orchid)
Hawaiian jewel-orchid (Anoectochilus sandvicensis)
Information on the Hawaiian jewel-orchid is currently being researched and written and will appear here shortly... More 6 Images 0 Videos
Thumbnail for Argyroxiphium sandwicense (Hawaiian silversword)
Hawaiian silversword (Argyroxiphium sandwicense)
The striking Hawaiian silversword stands out starkly against the volcanic landscape of its habitat. This plant consists of a... More 6 Images 3 Videos
Thumbnail for Lawsonia inermis (Henna)
Henna (Lawsonia inermis)
Information on henna is currently being researched and written and will appear here shortly... More 7 Images 0 Videos
Thumbnail for Abutilon eremitopetalum (Hiddenpetal Indian mallow)
Hiddenpetal Indian mallow (Abutilon eremitopetalum)
Information on the hiddenpetal Indian mallow is currently being researched and written and will appear here shortly... More 4 Images 0 Videos
Thumbnail for Taxus wallichiana (Himalayan yew)
Himalayan yew (Taxus wallichiana)
Information on the Himalayan yew is currently being researched and written and will appear here shortly... More 1 Image 0 Videos
Thumbnail for Ochrosia haleakalae (Holei)
Holei (Ochrosia haleakalae)
Information on the holei is currently being researched and written and will appear here shortly... More 14 Images 0 Videos
Thumbnail for Erica abietina (Honeysuckle heath)
Honeysuckle heath (Erica abietina)
This attractive South African shrub belongs to the Ericaceae, or heath family, and is therefore related to heather, blueberries and... More 9 Images 0 Videos
Thumbnail for Hoodia gordonii (Hoodia)
Hoodia (Hoodia gordonii)
Information on Hoodia gordonii is currently being researched and written and will appear here shortly... More 11 Images 0 Videos
Thumbnail for Hopea hongayanensis (Hopea)
Hopea (Hopea hongayanensis)
Information on Hopea hongayanensis is currently being researched and written and will appear here shortly... More 2 Images 0 Videos
Thumbnail for Aesculus wangii (Horse chestnut)
Horse chestnut (Aesculus wangii)
Information on Aesculus wangii is currently being researched and written and will appear here shortly... More 2 Images 0 Videos
Thumbnail for Horsfieldia pandurifolia (Horsfieldia)
Horsfieldia (Horsfieldia pandurifolia)
Information on Horsfieldia pandurifolia is currently being researched and written and will appear here shortly... More 3 Images 0 Videos
Thumbnail for Brimeura duvigneaudii (Hyacinth)
Hyacinth (Brimeura duvigneaudii)
ARKive is supporting the IUCN Species Survival Commission's Top 50 Plants Campaign. The aim of this campaign is to help save plant... More 1 Image 0 Videos
Thumbnail for Hypericum amblycalyx (Hypericum)
Hypericum (Hypericum amblycalyx)
This Hypericum is a small, bushy shrub that is decorated during spring with a beautiful cloak of bright yellow flowers. The... More 5 Images 0 Videos
Species 1 - 30 of 30