# Question about blocks used on Relative Density maps in MT Field Guide - Plants

**URL:** <https://forum.inaturalist.org/t/question-about-blocks-used-on-relative-density-maps-in-mt-field-guide-plants/20135>\
**Category:** Nature Talk\
**Created:** [February 8, 2021, 1:03am UTC](https://forum.inaturalist.org/t/question-about-blocks-used-on-relative-density-maps-in-mt-field-guide-plants/20135 "2021-02-08T01:03:18Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jerrydimarco](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/jerrydimarco/32/16973_2.png) [@jerrydimarco](https://forum.inaturalist.org/u/jerrydimarco)\
**Post date:** [February 8, 2021, 1:03am UTC](https://forum.inaturalist.org/t/question-about-blocks-used-on-relative-density-maps-in-mt-field-guide-plants/20135/1 "2021-02-08T01:03:18Z")

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In the MT Field Guides, what is the physical size, on the ground, of the blocks used on the Relative Density maps that show distribution of a species in the state? Do they correlate with Township and Range boundaries? Also, is there a good map to use that helps to locate the boundaries of those blocks with physical features or landmarks? Thank you.

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**Author:** ![bouteloua](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/bouteloua/32/1180_2.png) [@bouteloua](https://forum.inaturalist.org/u/bouteloua)\
**Post date:** [February 8, 2021, 1:26am UTC](https://forum.inaturalist.org/t/question-about-blocks-used-on-relative-density-maps-in-mt-field-guide-plants/20135/2 "2021-02-08T01:26:45Z")

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Hi @jerrydimarco, welcome to the iNaturalist Forum. Are you referring to the maps on user-created [guides](https://www.inaturalist.org/guides)? Like:

[https://www.inaturalist.org/guides/7757?view=card](https://www.inaturalist.org/guides/7757?view=card)

 ![image](https://us1.discourse-cdn.com/flex016/uploads/inaturalist/original/2X/8/8be1ec76e182d2ed689a57c83f6b6e9828be70cd.jpeg)

Or something else outside of iNaturalist, e.g. [http://mtnhp.org/webinars/](http://mtnhp.org/webinars/) ?

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**Author:** ![thomaseverest](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/thomaseverest/32/63220_2.png) [@thomaseverest](https://forum.inaturalist.org/u/thomaseverest)\
**Post date:** [February 8, 2021, 3:55am UTC](https://forum.inaturalist.org/t/question-about-blocks-used-on-relative-density-maps-in-mt-field-guide-plants/20135/3 "2021-02-08T03:55:42Z")

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I believe you’re referencing [this guide](http://fieldguide.mt.gov/displayClasses.aspx?Kingdom=Plantae), with a map like [this](http://fieldguide.mt.gov/RangeMaps/RecencyMap_PDAST0C030_FS.jpg). They look like lat/long to me, and wouldn’t correlate with township. Not sure how you’d find boundaries. Maybe you could contact the site. The Contact Us link opens an email with some addresses to send to.

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**Author:** ![jerrydimarco](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/jerrydimarco/32/16973_2.png) [@jerrydimarco](https://forum.inaturalist.org/u/jerrydimarco)\
**Post date:** [March 22, 2021, 6:42pm UTC](https://forum.inaturalist.org/t/question-about-blocks-used-on-relative-density-maps-in-mt-field-guide-plants/20135/4 "2021-03-22T18:42:59Z")

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Yes, I’m referring to the Montana Field Guide and its Relative Density maps. I thought folks at MTNHP would see my post, but perhaps I need to contact them directly. Thanks.

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/inaturalist/original/2X/7/7831452cf7f0d653ff1ffd34176334b7ef1b6a17.png) [@system](https://forum.inaturalist.org/u/system)\
**Post date:** [May 21, 2021, 6:43pm UTC](https://forum.inaturalist.org/t/question-about-blocks-used-on-relative-density-maps-in-mt-field-guide-plants/20135/5 "2021-05-21T18:43:03Z")

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