What's New
Recent updates, improvements, and new features in Dikarya tree builder.
Feature
Tree Viewer node rotation
The Tree Viewer now lets you right-click an internal node and choose Rotate node to reverse the displayed child-clade order without changing the phylogeny. Current Newick exports and refreshed views keep the rotated order, while Original Newick remains unchanged.
Feature
Smarter rooting for BLAST trees: Auto root + Most Divergent Hit modes
The tree viewer now has a Root: dropdown with Auto root, Midpoint root, Root on most divergent hit, Unrooted, and Manual root here. Auto root anchors on the sequence of interest (the blue-highlighted tip on iNaturalist-imported trees, or any tip you mark with the new Set sequence of interest button) and chooses a useful display root from the most distant high-quality BLAST hit. This is a visualization heuristic, not a claim about the true evolutionary root. If no good candidate is found, Auto root cleanly falls back to midpoint rooting and tells you why.
Fix
Tree recompute keeps pruned sequences out
Recomputing a tree from the Tree Viewer now excludes sequences that were already pruned, including sequences whose tree labels use the full FASTA header.
Improvement
Improved Alignment Viewer highlighting
Highlight Differences in the Alignment Viewer has been visually tuned so differences stand out more clearly while keeping the alignment readable and comfortable to scan.
Feature
Alignment Viewer in tree results
Tree results now include an interactive Alignment Viewer that opens the job's aligned sequences, follows tree selection, excludes pruned sequences by default, can optionally include pruned sequences, color-codes nucleotides, and offers sorting and difference-highlighting tools.
Feature
Generate trees from iNaturalist observations
Dikarya can now create a one-click tree from a single iNaturalist observation that has a MycoMap BLAST Results field, then adds a Phylogenetic Tree observation field to the observation when the tree finishes. The iNaturalist observation is highlighted in blue in the tree viewer to make it easy to find.
Improvement
Tree viewer right click menu can now open iNat / MO / MP / Genbank / Mycomap
The Tree Viewer now allows you to open observation in iNaturalist, Mushroom Observer or Mycoportal when those record types are detected. For GenBank accessions, the menu now offers both Open Sequence in GenBank and Open sequence in Mycomap. To use this feature, right click on any sequence in the tree.
Improvement
Tree viewer adds custom color groups
The Tree Viewer now shows color groups as clickable color chips. You can create groups with a custom color, edit a group color, apply a group by clicking its chip, and each sequence now belongs to only one color group at a time. Colors persist when the page is reloaded or someone else views your tree.
Improvement
Added a public API
Users can now generate an API key and do anything that they can do on this website from within other programs. API docs: https://dikarya.us/api/v1/docs
Fix
Tree viewer box select allows you to rapidly prune a tree
If you hold down alt and right-drag in the tree viewer, it draws a red box - any branch tips in this red box will be deleted from the tree. This makes it really quick and easy to include just the important sequences in a tree.
Improvement
Tree Builder design refresh
The Tree Builder now uses the new journal typography, lifted dark cards, boxed sequence inputs, and a gold-accented sequence queue with quick run controls.
Improvement
Tree viewer Deselect button
The Tree Viewer now includes a Deselect button next to Midpoint that clears the current visible selection without changing the colors assigned to sequences / clades.
Fix
Tree viewer rename labels persist
Renaming a selected sequence in the Tree Viewer now reapplies the saved label whenever the tree reloads, while keeping the original sequence ID for later prune, reroot, and rename actions.
Feature
Tree viewer sequence metric sliders
The Tree Viewer now has live Query Coverage, Subject Coverage, and Identity % sliders that hide MycoMap metric-bearing sequences in the rendered tree while you drag, without changing the saved tree. This allows you to quickly remove low Query Coverage, Subject Coverage, and Identity % sequences from your tree - and see the effects of the sliders in real time.
Improvement
MycoMap filter guidance in Tree Builder
The queue footer now explains how to use the MycoMap BLAST metrics filter and shows when metric-bearing hits are available.
Improvement
MycoMap BLAST metrics in Tree Builder
MycoMap imports now preserve identity, query coverage, subject coverage, and source type for imported hits so the Tree Builder can display and filter by those metrics.
Feature
GenBank accession import in Tree Builder
The Tree Builder custom sequence field now accepts one or more GenBank accession numbers and imports matching sequences directly into the queue.
Feature
Selection set colors now persist across page reloads
When you color-code sequences in the tree viewer using selection sets, those colors are now saved automatically and restored when you revisit the page.
Improvement
Mouse wheel now scrolls instead of zooming the tree
In the tree viewer, scrolling the mouse wheel now scrolls the page up and down rather than zooming in and out. Use the + / − zoom buttons in the toolbar to zoom.
Feature
One-Click Tree from Mycomap URL
The Mycomap import section now has a second button next to Fetch Sequences: One-Click Tree. Paste a Mycomap BLAST result URL and click it to fetch the sequences and immediately start building a tree — no need to scroll down and click the separate One-Click Quick Tree button.
Feature
What's New page launched
A changelog page is now available in the header. It shows recent updates and highlights anything new since your last visit.
Items above the marker are new since your last visit on May 31, 2026 at 8:43 PM UTC.